Готові списки джерел за темами / Microstructural and mechanical characterizations

Добірка наукової літератури з теми "Microstructural and mechanical characterizations"

Автор: Grafiati
Опубліковано: 7 липня 2024
Оновлено: 7 липня 2024

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Статті в журналах з теми "Microstructural and mechanical characterizations":

1

Solmaz, Mehmet, Hasan Kotan, Sabriye Açıkgöz, and Mehmet Bağcı. "Microstructural Characterization and Mechanical Tests of Mill Rolls." Orclever Proceedings of Research and Development 1, no. 1 (December 31, 2022): 220–39. http://dx.doi.org/10.56038/oprd.v1i1.204.

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In this study, using scanning electron microscope (SEM) and optical microscope (OM), microstructural characterizations of both the surfaces and deep microstructural characterization of the rolls were carried out from the outer layer to the inner layer and the matrix structure, carbide phases and graphite structures were depicted. The types of carbide phases present in the microstructure were determined using the X-ray diffraction (XRD) technique. The densities of the inner layer and the outer layer were calculated with the samples cut from the appropriate regions. Within the scope of mechanical tests, hardness test, compression and tensile tests and impact tests were applied to the samples prepared by cutting wire erosion from the appropriate area of ​​the mill roll. The fracture surfaces obtained as a result of the impact test were analyzed by SEM and the fracture characteristics of the material were interpreted. Finally, wear tests were carried out at both room temperature and high temperature (150 ºC), and the wear resistance of the roll surface during use was determined for different temperatures.
2

Ferreira-Palma, Carlos, Héctor J. Dorantes-Rosales, Víctor M. López-Hirata, and Alberto A. Torres-Castillo. "Effect of Ag additions on the microstructure and phase transformations of Zn-22Al-2Cu (wt.%) alloy." International Journal of Materials Research 112, no. 2 (February 1, 2021): 108–17. http://dx.doi.org/10.1515/ijmr-2020-8009.

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Abstract The relationship between microstructure and mechanical properties is studied for eutectoid Zn-22Al (wt.%) alloys modified with Cu and Ag. Three alloys with a Cu content of 2 wt.% and varying amounts of Ag were cast and hot-extruded. Different microstructural characteristics were induced by heat treatments: natural aging, artificial aging and furnace cooling. Structural and microstructural characterizations were carried out with X-ray diffraction and scanning electron microscopy. Mechanical properties were determined by tensile testing. Dilatometry was used for determining the effects of composition on the transformation points. The addition of Ag increased the ε phase fraction and provided solid solution strengthening, improving the mechanical strength and reducing ductility. Ag additions also displaced the eutectoid reaction to higher temperatures. The microstructure of the matrix has proven to have a strong impact on mechanical properties. The naturally aged specimens presented the highest ductility and tensile strength; however, these properties are severely affected by aging. Lamellar microstructures present the lowest ductility and values of tensile strength between those of the natural and artificially-aged specimens.
3

Francisco, Fernanda Regina, Joao Roberto Moro, Evaldo Jose Corat, R. A. Campos, and Osmar Bagnato. "Effect of Heat Treatment on Microstructure and Mechanical Property of Diamonds Substrates Brazed with Active Filler Metal." Defect and Diffusion Forum 353 (May 2014): 254–58. http://dx.doi.org/10.4028/www.scientific.net/ddf.353.254.

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This study aims to identify the effects caused by diffusion through heat treatment in diamonds, brazed components with metals and its effects on mechanical properties and microstructure. It will be used diamond films produced by CVD process, brazed by active filler metals with metallic substrate, using a high vacuum furnace at MAT / LNLS / CNPEM; the samples were heat treated in the atmosphere furnace at MAT too. The characterizations are carried out by hardness testing, vacuum sealing equipment at the MAT / LNLS / CNPEM facilities, and chemical and microstructural characterization will be performed using the scanning electron microscopes and EDS at LNNano / CNPEM.
4

Benlamnouar, Mohamed Farid, Mohamed Hadji, Riad Badji, Nabil Bensaid, Taher Saadi, Yazid Laib dit Laksir, and Sabah Senouci. "Optimization of TIG Welding Process Parameters for X70-304L Dissimilar Joint Using Taguchi Method." Solid State Phenomena 297 (September 2019): 51–61. http://dx.doi.org/10.4028/www.scientific.net/ssp.297.51.

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The optimization of mechanical properties of the welded joints requires a statistical approach such as Taguchi experimental designs associated with experimental techniques and laboratory characterizations. The aim of this work is to propose a method of optimization of the mechanical performances of a TIG dissimilar welding of two grades of steels: a high strength low alloy steel X70 and an austenitic stainless steel 304L. The experimental designs were chosen according to the Taguchi method L9. The metallurgical characterization includes optical microscopy, SEM microscopy, EDX analyses and mechanical tests to establish a relationship between welding parameters, microstructures and mechanical behavior in different zones of a dissimilar weld joint. The results showed that the hardness is more strongly related to microstructural evolution than tensile strength of dissimilar joint. It was found that gas flow is the main significant TIG welding parameter affecting dissimilar weld characteristics.
5

Dos Santos, Silas Cardoso, Orlando Rodrigues Júnior, and Letícia Lucente Campos. "Formation and EPR response of europium-yttria micro rods." QUARKS: Brazilian Electronic Journal of Physics, Chemistry and Materials Science 1, no. 1 (September 18, 2019): 53–56. http://dx.doi.org/10.34019/2674-9688.2019.v1.28229.

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Designing new materials with suitable dose-response efficiency is a great challenge in radiation dosimetry search. Yttria (Y2O3) has excellent optical, mechanical, chemical, and thermal properties. Besides, yttria exhibits crystal characteristics that provide insertion of other rare earths, forming innovative materials. Nevertheless, there are quite few studies on formation, microstructural and EPR response evaluation of yttria. This work reports the formation and EPR characterization of europium-yttria micro rods for radiation dosimetry. Ceramic rods obtained by sintering at 1600ºC/4h in air were exposed to gamma radiation with doses from 1Gy to 150kGy. Particle, microstructural and dosimetry characterizations were performed by PCS, XRD, SEM, OM, and EPR techniques. As sintered europium-yttrium rods exhibited dense microstructure (90% theoretical density) and linear EPR dose response behavior up to 10kGy. These results show that europium-yttria is a promising material for radiation dosimetry.
6

Sheng, Hua, Inge Uytdenhouwen, Guido Van Oost, and Jozef Vleugels. "Mechanical properties and microstructural characterizations of potassium doped tungsten." Nuclear Engineering and Design 246 (May 2012): 198–202. http://dx.doi.org/10.1016/j.nucengdes.2011.10.008.

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7

Dzhurinskiy, Dmitry, Abhishek Babu, Stanislav Dautov, Anil Lama, and Mayuribala Mangrulkar. "Modification of Cold-Sprayed Cu-Al-Ni-Al2O3 Composite Coatings by Friction Stir Technique to Enhance Wear Resistance Performance." Coatings 12, no. 8 (August 4, 2022): 1113. http://dx.doi.org/10.3390/coatings12081113.

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An innovative hybrid process combining two effective surface modification techniques, cold spray (CS) and friction stir processing (FSP), was proposed to refine the microstructure of Cu-Al-Ni-Al2O3 composite coating material. FSP was performed under constant rpm using extensive cooling conditions to remove heat generated during the operation. Microstructural characterizations such as optical micrography (OM), scanning electron microscopy (SEM), Electron Backscatter Diffraction (EBSD), Energy-dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) were performed to evaluate the microstructural evolution of the coatings before and after FSP treatment. Mechanical characterizations such as microhardness and elastic modulus were measured using micro-depth sensing techniques. Furthermore, sliding wear tests were performed to study the wear resistance of the as-sprayed and processed coatings. The findings suggest that after FSP, there is an improvement in microstructure of the coating layers with the elimination of particle boundaries, micro-pores and micro-cracks, and processed coatings showed an improvement in mechanical properties. Furthermore, there was a slight reduction in the wear rate of the deposited CuAlNi-Al2O3 composite coatings. Among all the test coatings, friction stir processed S1 coating showed the lowest wear rate, which was an almost two times lower wear rate than its unprocessed counterparts.
8

Liu, Yuan, Qingqing Ding, Xiao Wei, Yuefei Zhang, Ze Zhang, and Hongbin Bei. "The Microstructures and Mechanical Properties of a Welded Ni-Based Hastelloy X Superalloy." Crystals 12, no. 10 (September 21, 2022): 1336. http://dx.doi.org/10.3390/cryst12101336.

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The Hastelloy X superalloy is a widely used solid-solution Ni-based sheet alloy for gas turbines, aero-engine combustion chambers, and other hot-end components. To investigate the effect of microstructure, especially grain size, on its weldability, Hastelloy X alloy bars are homogenized, cold-rolled to thin sheets, and recrystallized under different conditions to obtain equiaxed grain microstructures with average grain sizes of ~5 μm, ~12 μm, and ~90 μm. The laser welding process is used for joining the alloy sheets, and then the alloy’s weldability is investigated through microstructural and mechanical property characterizations. The microstructures in weld consist of coarse columnar grains with dendrite, and grain sizes of these columnar grains are almost the same when grain size of Hastelloy X base metal increases from ~5 μm to ~90 μm. Moreover, although all welds exhibit lower yield strengths (YS), ultimate tensile strengths (UTS), and elongations to fracture (EF) than the base metal, the degrees of reduction in them become slight when the grain size of base metal increases from ~5 μm to ~90 μm.
9

Maury, Nicolas, Moukrane Dehmas, Claude Archambeau-Mirguet, Jérôme Delfosse, and Elisabeth Aeby-Gautier. "MICROSTRUCTURAL EVOLUTIONS AND MECHANICAL PROPERTIES DURING LONG-TERM AGEING OF TITANIUM ALLOY Ti-17." MATEC Web of Conferences 321 (2020): 12004. http://dx.doi.org/10.1051/matecconf/202032112004.

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Microstructural evolutions and resulting mechanical properties have been investigated in the near-β Ti-17 alloy following long- term ageing heat-treatment up to 6000 h at 450 °C. The initial microstructure was bimodal lamellar, consisting of two populations of α grains (αlam-primary and αsecondary) in a β phase matrix. Two microstructures were obtained either via controlled heat- treatments from the β phase field - in order to generate significant differences in the grain fraction, size, density and spatial distribution - or sampled from a part submitted to an industrial processing route. High energy XRD reveals that whatever the initial microstructure, the amount of α phase increases significantly after 1000 h long-term ageing. Complementary SEM and image analysis characterizations enable to deduce that this evolution is the consequence of αsecondary growth and/or coarsening. Also, TEM observations and EDX analysis show that the Mo and Cr contents of the β phase increase and that α2 nano-precipitates form within the αlam-primary grains. Considering the mechanical properties, long-term ageing leads to an increase in the yield and ultimate tensile strength, as well as a decrease in the elongation at failure, at an extent which depends on the ageing time.
10

Mohan, Dhanesh G., Jacek Tomków, and S. Gopi. "Induction Assisted Hybrid Friction Stir Welding of Dissimilar Materials AA5052 Aluminium Alloy and X12Cr13 Stainless Steel." Advances in Materials Science 21, no. 3 (September 1, 2021): 17–30. http://dx.doi.org/10.2478/adms-2021-0015.

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Abstract This research aimed to study the induction in-situ heated hybrid friction stir welding (IAFSW) method to join AA5052 aluminium alloy with X12Cr13 stainless steel (SS) to enhance joint strength. The potency of this method on the mechanical properties and microstructural characterizations were also investigated. The results show that the transverse tensile strength gained was 94% of the AA5052 base metal that is 229.5 MPa. This superior strength was achieved due to the annealing that happened to the AA 5052 region and elevated plastic flow in the weld zone by the in-situ induction heating, which resulted in the elongation of the weld region. The microstructure characterization indicates that a refined grain structure was gained in the nugget zone without defects.
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Статті в журналах Дисертації Книги

Дисертації з теми "Microstructural and mechanical characterizations":

1

Katiyar, Pushkar. "PROCESSING, MICROSTRUCTURAL AND MECHANICAL CHARACTERIZATION OF MECHANICALLY ALLOYED Al-Al2O3 NANOCOMPOSITES." Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4496.

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Aluminum-alumina nanocomposites were synthesized using mechanical alloying of blended component powders of pure constituents. This study was performed on various powder mixtures with aluminum as the matrix and alumina as the reinforcement with volume fractions of 20, 30, and 50 % and Al[subscript 2]O[subscript 3] particle sizes of 50 nm, 150 nm, and 5 [mu]m. X-ray diffraction (XRD) and scanning electron microscopy (SEM) techniques were used for the crystal structure and microstructural characterization of the powders at different stages of milling. Al?O? powders with 50 nm and 150 nm particle size were predominantly of [gamma]-type, while Al[subscript 2]O[subscript 3] of 5 [mu]m size was of [alpha]-type. The main goal was to achieve uniform distribution of the Al?O? ceramic particles in the Al matrix, which was achieved on milling for 24 h in a SPEX mill or 100 h in a Fritsch Pulverisette planetary ball mill. The powders were consolidated in two stages: pre-compaction at room temperature followed by vacuum hot pressing (VHP) or hot isostatic pressing (HIP) techniques to a fully dense condition. The effect of reinforcement particle size and volume fraction on the stress-strain response, elastic modulus and yield strength of the composites was investigated. Nanoindentation and compression tests were performed to characterize the composite material. Yield strength of 515 MPa, compressive strength of 685 MPa and elastic modulus of 36 GPa were obtained from compression tests. Nanoindentation results gave the yield strength of 336 MPa, maximum shear stress of 194 MPa and an elastic modulus of 42 GPa. The low elastic modulus values obtained from the above tests might be because of localized yielding possibly due to residual stresses.
M.S.
Department of Mechanical, Materials and Aerospace Engineering;
Engineering and Computer Science
Materials Science and Engineering
2

BACELLAR, RAPHAEL SIMOES. "MICROSTRUCTURAL AND MECHANICAL CHARACTERIZATION OF AGRIBUSINESS WASTES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=16445@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Compósitos reforçados por fibras lignocelulósicas e, também, materiais estruturais de origem vegetal, tal como o bambu, vêm sendo cada vez mais empregados em diversos segmentos industriais, tendo em vista a crescente necessidade da sociedade de usar materiais provenientes de recursos naturais renováveis. Assim sendo, este trabalho visa analisar resíduos da agroindústria da produção sustentável de palmito e de coco, que são os caules das palmeiras Bactris gasipaes (pupunha) e Cocos nucifera (coqueiro). O objetivo em caracterizá-los é fundamentar uma via alternativa de obtenção de madeira, considerando os seguintes aspectos: a disponibilidade, a preservação do meio ambiente, o bom desempenho do material e o baixo custo. Neste trabalho foi feita a caracterização microestrutural da pupunha por microscopia eletrônica de varredura e microscopia óptica digital. O comportamento térmico e termo-mecânico da pupunha foi avaliado por termogravimetria e por análise termo-dinâmico mecânica. Foi avaliado ainda o comportamento mecânico em flexão, compressão e cisalhamento na linha de cola de corpos de prova usinados do estipe da pupunha, bem como se avaliou por difração de raios-X a estrutura cristalina e o grau de cristalinidade do material. Além disso, foi feita a caracterização da resistência à abrasão e avaliado o efeito do envelhecimento por absorção de água e por radiação UV nas propriedades à flexão da pupunha. Também foram avaliadas a resistência à abrasão e as propriedades mecânicas à flexão e à compressão do caule do coqueiro.
Composites reinforced by lignocellulosic fibers and structural cellulosic materials, such as bamboo, have being increasingly used in many industrial fields, owing to the growing society need to use materials from renewable resources. Therefore, this study aims to analyze two agro-wastes of the cococnut and heart of palm sustainable production, which are the trunks of these palms (Bactris gasipaes and Cocos nucifera). The main objective is to establish the foundation for an alternative way of obtaining wood, considering the following aspects: availability, environmental conservation, good performance and low material cost. In this work microestrutural characterization of pupunha trunk was done by scanning electron microscopy and digital optical microscopy. The thermal and the thermo mechanical behaviors were evaluated by thermogravimetric analysis and by dynamic thermo mechanics analysis. Also rated was the material mechanical behavior in bending, compressing and shearing in the glue line. The material crystal structure and the degree of crystallinity was tested by X-ray diffraction. The resistance to abrasion was checked and the effect of aging due to water absorption and UV radiation in the bending properties of pupunha. Finally we verified the abrasion resistance and mechanical properties of bending and compressing the coconut palm.
3

Lee, William Morgan. "Dynamic Microstructural Characterization of High Strength Aluminum Alloys." NCSU, 2008. http://www.lib.ncsu.edu/theses/available/etd-04302008-114019/.

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The use of aluminum alloys for commercial and military applications has increased substantially due to the alloysâ low areal density, toughness, and processability. It has recently been shown that an aluminum alloy, Al 2139, with copper, magnesium, and silver can be significantly toughened and strengthened by combinations of θâ and Ω precipitates and dispersed manganese particles. What has not been quantified are how these precipitates and dispersed particles affect behavior and what the material mechanisms and microstructural characteristics are that control the behavior of Al 2139 for strain-rates that span the quasi-static to high rates of strain. Hence, in this investigation, detailed transmission electron microscopy (TEM), scanning transmission electron microscopy (STEM), scanning electron microscopy (SEM), orientation imaging microscopy (OIM), and optical microscopy (OM) were used to delineate the different physical scales that range from the nano for the precipitates and dislocations to the micron for the dispersed particles, grain orientations and texture, grain-sizes, slip-bands, and grain-boundary orientations. The deformed specimens were from an Al 2139 plate that was impacted by 4340 steel fragmentation stimulating projectiles (FSPs) at impact velocities ranging from 813 to 1043 m/s. The majority of the projectiles were defeated by the Al 2139 plate, which is another indication of the alloyâs potential for damage mitigation and projectile defeat and resistance. Based on this detailed microstructural characterization, mechanisms for projectile defeat and full penetration are proposed. Deformation and damage modes include petalling on the impact face, shear cracking through the middle section of the plate due to projectile penetration, and discing due to bending stresses at a spall plane near the back of the plate. Shear cracking appears to be GB related, and the discing is dependent on the rolling direction. The extent of these modes for cross-sections where the target was penetrated was greater than that in regions where the projectile was defeated. For projectile defeat, large and elongated grains and precipitate deformation due to dislocation interaction can lead to highly ductile performance, which resists discing failure and plate penetration. Large grains significantly reduce the fraction of GBs, which then reduces the amount of GB cracking due to intense shear accumulation and spall. The elongation of the grains due to rolling also increased the dislocation densities, and subsequently the ductility of the grains, which reduced tensile failure due to the bending in the discing regions. High angle GBâs can also limit heterogeneous θâ precipitation at the GBâs, which would reduce intergranular fracture. Precipitation of Ω also increases the spall strength and decreases localized shear through its multiple cutting interactions with dislocations at the matrix interface. Dispersed particles also increase the strength of the alloy in high strain-rate applications by resisting localized shear. The results of this study are a first step in developing a tailored methodology that can be used to optimize microstructural characteristics and behavior of aluminum alloys for optimal strength and toughness.
4

Rubisoff, Haley. "MICROSTRUCTURAL CHARACTERIZATION OF FRICTION STIR WELDED TI-6AL-4V." MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082009-203851/.

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Friction stir welding (FSWing) is a solid state, thermo-mechanical process that utilizes a non-consumable rotating weld tool to consolidate a weld joint. In the FSW process, the weld tool is responsible for generating both the heat required to soften the material and the forces necessary to deform and consolidate the former weld seam. Thus, weld tool geometry, material selection, and process parameters are important to the quality of the weld. To study the effects of the weld tool geometry on the resulting welds, a previous study was conducted using varying degree taper, microwave-sintered tungsten carbide (WC) weld tools to FSW Ti-6Al-4V. Fully consolidated welds were down selected for this study to evaluate the resulting mechanical properties and to document the microstructure. X-ray diffraction (XRD) was used to compare the parent material texture with that in the weld nugget. The purpose of this study is to quantify the temperatures obtained during FSWing by interpreting the resulting microstructure. This information is useful in process optimization as well as weld tool material selection.
5

ANDIA, JOSE LUIS MONTALVO. "API X80 HAZ PHYSICAL SIMULATION AND MICROSTRUCTURAL AND MECHANICAL CHARACTERIZATION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=21807@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
Foram utilizados dois sistemas de aço API 5L X80, Nb-Cr e Nb-Cr-Mo, para obter as diferentes regiões da ZTA pertencentes a uma soldagem multipasse. Estas regiões são denominadas de: região de grãos grosseiros inalterados (RGGI), região de grãos refinados reaquecidos supercriticamente (RGRRS), região de grãos grosseiros reaquecidos intercriticamente (RGGRI), região de grãos grosseiros reaquecidos subcriticamente (RGGRS). Estas regiões foram obtidas para dois aportes de calor (1,2 e 2,5 kJ/mm) e a RGGRI por ser considerada a região onde poderiam ser formadas zonas frágeis localizadas (ZFL) foram utilizados também aportes de calor de 3,0 e 4,0 kJ/mm. Cada uma das regiões obtidas pela simulação física foi submetida a ensaios mecânicos de impacto Charpy e dureza, assim como a análises metalográficos por microscopia ótica (MO) e microscopia eletrônica de varredura (MEV). Foi possível observar que as microestruturas pertencentes a uma ZTA simulada obtidas com o equipamento (GleebleR3800) se mostram compatíveis com aquelas pertencentes a uma soldagem real. Este resultado comprova que as velocidades de resfriamento obtidas pela simulação foram similares àquelas da soldagem real. A adição de Mo ao sistema Nb-Cr-Mo não promoveu mudanças significativas tanto a nível microestrutural, observado por MO e MEV, como em termos de propriedades mecânicas.
Two API 5L steels grade X80 of the systems Nb-Cr and Nb-Cr-Mo, were submitted to physical simulation in order to obtain different regions of the HAZ similar to those of a multipass welding, the coarse grained heat affected zone (CGHAZ), supercritically coarse grained heat affected zone (SCCGHAZ), intercritically coarse grained heat affected zone (ICCGHAZ), subcritically coarse grained heat affected zone (SCGHAZ). The welding simulation was carried out on a Gleeble R 3800 considering two thermal cycles and different heat inputs 1.2, 2.5, 3.0 and 4,0 kJ/mm, typical of a girth weld. All HAZ zones were simulated only for 1.2 and 2.5kJ/mm. Since the ICCGHAZ is the probable weak link where a local brittle zone (LBZ) can occur, this region was simulated for all heat inputs studied. All simulated regions were subjected to traditional mechanical tests such as impact Charpy-V at -40 and -60C and microhardness Hv1kg. Metallographic analysis by optical microscopy (OM) and scanning electron microscopy (SEM) and fractography were also performed. The microstructures obtained for the different regions of the HAZ, by simulation were close to those of a real welding, however, the cooling rates obtained by simulation were slower than that obtained in a real welding. The mechanical properties and microstructure of the different regions of the HAZ for the systems NbCr and NbCrMo indicate that the microstructural and mechanical behavior of the intercritical region (ICCGHAZ) was considered to be similar to a local brittle zone (LBZ) for all conditions studied.
6

Wei, Yun. "Microstructural characterization and mechanical properties of super 13% Cr steel." Thesis, University of Sheffield, 2005. http://etheses.whiterose.ac.uk/12826/.

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Super 13% Cr steels are used for offshore applications and have to meet strict tensile strength, yield strength, toughness, elongation, and hardness specifications. The mechanical properties of these steels are strongly dependent on the proportions of retained austenite and martensite, and consequently small changes in heat treatment parameters result in major changes in properties. In this work, a detailed investigation of the effect of heat treatment parameters on microstructural features, hardness and tensile properties of the commercial supermartensitic 13Cr-5Ni-2Mo steels in the asreceived and re-heat treated state were undertaken. The re-heat treatment was performed by re-austenitising the samples at 950 °C for 2 h, air-cooling, and then tempering (single and double temper) in the range of 550-700 °C. The effects of tempering temperature, time, and their combination P (P = (273+T (°C) x (40 + login t (h)) x 1000'1), the Holloman-Jaffe parameter, on retained austenite volume fraction, hardness and tensile properties were investigated. Retained austenite content increased with P to a peak value at P-36.9 and then decreased due to the formation of fresh martensite. However, the second temper increased retained austenite due to the re-transformation of fresh martensite to austenite. This resulted in refined grain size and a high dislocation density. An increase in P gave a decrease in the C and Ni content in austenite on tempering while the austenite grain size increased. The combination of these two effects led to a decrease in the stability of the retained austenite with P, as shown by the increased M. For the first temper at P > 36.9, the austenite present after the second temper was more stable than after the first temper as a result of re-distribution of C and Ni from the martensite to the austenite. 0.2% proof strength and hardness were inversely related to retained austenite content with P. Both hardness and 0.2% proof strength decreased linearly with increase in retained austenite content, but elongation showed the reverse trend. However, the slope of the relationships depended on whether fresh martensite was present or not. The results have shown that retained austenite with volume fraction between 16-30 vol% and size < 208 nm gives the optimum combination of strength, ductility and hardness.
7

Querin, Joseph A. "Microstructural Characterization of AA6022-T43 Aluminum Alloy Sheet During Monotonic Loading." MSSTATE, 2005. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07082005-140147/.

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Environmental issues and regulations are pushing the automotive industry to produce more efficient and environmentally friendly vehicles. To address these issues, reducing the weight of the vehicles by use of aluminum alloys is increasing. AA6022-T43 is a new sheet aluminum alloy designed specifically for automobile enclosure panels. Because this alloy is new, little data exists on its mechanical properties in the open literature. AA6022-T43 is received by the automotive industry in 1-mm thick sheet stock and subsequently stamped into the desired component. The design and manufacturing processes of the component are guided by the materials mechanical behavior. This study characterizes the mechanical and microstructural properties of uniaxially strained AA6022-T43.
8

Dash, Manas Ranjan. "Thermo-mechanical durability assessment and microstructural characterization of 95.5Pb2Sn2.5Ag high temperature solder." College Park, Md. : University of Maryland, 2006. http://hdl.handle.net/1903/3570.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2006.
Thesis research directed by: Dept. of Mechanical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
9

Prabhu, Balaji. "MICROSTRUCTURAL AND MECHANICAL CHARACTERIZATION OF AL-AL2O3 NANOCOMPOSITES SYNTHESIZED BY HIGH-ENERGY MILLING." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3571.

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The twin objectives of the investigation were (i) to synthesize Al/Al2O3 metal matrix composites (MMCs) with uniform distribution of the Al2O3 reinforcement in the Al matrix and (ii) to evaluate the effect of volume fraction and size of the reinforcement on the mechanical behavior of MMCs. This was achieved by successful synthesis of Al-Al2O3 MMCs with volume fractions of 5, 10, 20, 30, and 50%, and particle sizes of 50 nm, 150 nm, and 5 µm of Al2O3 synthesized from blended component powders by a high-energy milling technique. A uniform distribution of the Al2O3 reinforcement in the Al matrix was successfully obtained after milling the powders for a period of 20 h with a ball-to-powder weight ratio of 10:1 in a SPEX mill. The uniform distribution of Al2O3 in the Al matrix was confirmed by characterizing these nanocomposite powders by scanning electron microscopy and X-ray mapping. The energy dispersive spectroscopy and X-ray diffraction techniques were employed to determine the composition and phase analysis, respectively. The milled powders were then consolidated for subsequent mechanical characterization by (i) magnetic pulse compaction (MPC) (ii) hot-isostatic pressing (HIP), (iii) vaccum hot pressing (VHP), and (iv) a combination of vaccum hot pressing and hot-isostatic pressing (VHP+HIP). However, successful consolidation of the powders to near-full density was achieved only through VHP+HIP for the 5 and 10 vol. % Al2O3 samples with 50 nm and 150 nm particle sizes. The fully dense samples were then subjected to mechanical characterization by compression testing and nanoindentation techniques. The strength and elastic modulus values obtained from compression testing showed an increase with increasing volume fraction and decreasing particle size of the reinforcement. The nanoindentation results were, however, contradictory, and the presence of residual stresses in the samples was attributed as the cause for the deviation in values.
M.S.M.S.E.
Department of Mechanical, Materials and Aerospace Engineering;
Engineering and Computer Science
Materials Science and Engineering
10

Bei, Guo-Ping. "Synthesis, microstructural characterization and mechanical properties of nanolaminated Ti3AlxSn(1-x)C2 MAX phases." Poitiers, 2011. http://nuxeo.edel.univ-poitiers.fr/nuxeo/site/esupversions/9a20805b-0e53-47c0-8b16-c1a4ac3c2042.

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Les travaux exposés dans cet ouvrage portent sur l'élaboration, la caractérisation microstructurale et les propriétés mécaniques de solutions solides nanolamellaires de phases dites MAX. Les phases MAX représentent une classe exceptionnellement étendue de céramiques. Elles répondent à une formule générale du type Mn+1AXn (n=1, 2 ou 3) où M est un métal de transition, A est un métal des groupes IIIA ou IVA, et X est un métalloïde (C ou N). Nous avons dans un premier temps réalisé l'optimisation de la synthèse, par métallurgie des poudres, de Ti3AlC2 pur. Une nouvelle phase, Ti3SnC2, ayant été découverte au laboratoire en 2007, les travaux se sont alors focalisés sur la synthèse de solutions solides du type Ti3AlxSn(1-x)C2 par pressage isostatique à chaud. Nous nous sommes, par la suite, attachés à la caractérisation microstructurale de ces solutions solides en étudiant notamment les variations du paramètre de maille, du taux de distorsion des octaèdres [Ti6C] et des prismes trigonaux [Ti6AlxSn(1-x)]. Enfin, nous avons déterminé la dureté intrinsèque et le module d'élasticité des différentes solutions solides en fonction du taux de substitution en utilisant la nanoindentation. Par ailleurs, des essais de compression, uniaxiale et sous confinement de gaz, ont été réalisés à température ambiante, afin d'étudier et de comparer les mécanismes de déformation de Ti3AlC2 et de la solution solide Ti3Al0. 8Sn0. 2C2. Les relations entre modifications microstructurales et propriétés mécaniques sont discutées. Nous montrons notamment que Ti3AlC2 et Ti3Al0. 8Sn0. 2C2 peuvent être considérés comme des matériaux "Kinking Non-linear Elastic"
The work described in this thesis concerns the elaboration, the microstructural characterization and the mechanical properties of nanolaminated MAX phases solid solutions. The MAX phases represent a large class of ceramics. They are a family of ternary nitrides and carbides, with the general formula Mn+1AXn (n=1, 2 or 3), where M is an early transition metal, A is a metal of the groups IIIA or IVA, and X is either carbon or nitrogen. We performed at first the optimization of the synthesis, by powder metallurgy, of highly pure Ti3AlC2. Since a new MAX phase, Ti3SnC2, has been discovered in the laboratory in 2007, the study has been further focused on the synthesis of Ti3AlxSn(1-x)C2 solid solutions by hot isostatic pressing. In a second step, the microstructural characterization of these solid solutions has been carried out, by studying, in particular, the variation of the cell parameters, the distortion rates of [Ti6C] octahedrons and [Ti6AlxSn(1-x)] trigonal prisms. Finally, we have determined the intrinsic hardness and the elastic modulus of the various solid solutions as a function of the Al content by using the nanoindentation. Besides, uniaxial and gas confining compression tests were realized at room temperature, to study and compare the deformation mechanisms of Ti3AlC2 and Ti3Al0. 8Sn0. 2C2. The relationship between microstructural modifications and mechanical properties are discussed. We show in particular that Ti3AlC2 and Ti3Al0. 8Sn0. 2C2 can be considered as "Kinking Non-linear Elastic" materials
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Книги з теми "Microstructural and mechanical characterizations":

1

Center, Lewis Research, ed. Tensile properties and microstructural characterization of Hi-Nicalon SiC/RBSN composites. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.

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2

Singh, Jag J. Microstructural characterization of semi-interpenetrating polymer networks by positron lifetime spectroscopy. [Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1997.

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3

H, Pater Ruth, Eftekhari Abe, and Langley Research Center, eds. Microstructural characterization of semi-interpenetrating polymer networks by positron lifetime spectroscopy. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1996.

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4

Singh, Jag J. Microstructural characterization of semi-interpenetrating polymer networks by positron lifetime spectroscopy. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1996.

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5

Bansal, Narottam P. Microstructural, chemical and mechanical characterization of polymer-derived Hi-Nicalon fibers with surface coatings. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.

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6

Bansal, Narottam P. Microstructural, chemical and mechanical characterization of polymer-derived Hi-Nicalon fibers with surface coatings. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.

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7

Antonio, Brian Kent. Material and mechanical characterizations for braided composite pressure vessels. Springfield, Va: Available from the National Technical Information Service, 1990.

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8

A, DiCarlo James, and NASA Glenn Research Center, eds. Thermomechanical characterization of SiC fiber tows and implications for CMC. [Cleveland, Ohio]: National Aeronautics and Space Administration, Glenn Research Center, 1999.

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9

McHale, Paul F. Factors influencing the microstructural and mechanical properties of ULCB steel weldments. Monterey, Calif: Naval Postgraduate School, 1991.

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10

Clark, Elizabeth J. Molecular and microstructural factors affecting mechanical properties of polymeric cover plate materials. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, 1985.

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Частини книг з теми "Microstructural and mechanical characterizations":

1

Gissler, W., and J. Haupt. "Microstructural Characterization of Films and Surface Layers." In Eurocourses: Mechanical and Materials Science, 313–33. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-017-0631-5_14.

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2

Ajmi, Basma, Mohamed Kchaou, Amilcar Ramalho, Amira Sellami, Antonio J. Gamez, and Nabil Bouzayani. "Microstructural and Mechanical Characterization of a Baby Diaper." In Lecture Notes in Mechanical Engineering, 312–19. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52071-7_43.

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3

Barcellona, A., L. Cannizzaro, and D. Palmeri. "Microstructural Characterization of Thermo-Mechanical Treated TRIP Steels." In Sheet Metal 2007, 71–78. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-437-5.71.

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4

Kumar, Chandan, and Manas Das. "Microstructural Characterization of Ti-6Al-4V Alloy Fiber Laser Weldments." In Advances in Mechanical Engineering, 475–86. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0124-1_43.

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5

Wötting, G., B. Kanka, and G. Ziegler. "Microstructural Development, Microstructural Characterization and Relation to Mechanical Properties of Dense Silicon Nitride." In Non-Oxide Technical and Engineering Ceramics, 83–96. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-3423-8_6.

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6

Deshpande, Shridhar, D. Amaresh Kumar, C. T. Murali, and Shrishail Kakkeri. "Mechanical and Microstructural Characterization of Copper and Carbon Nanotubes Composites." In Lecture Notes in Mechanical Engineering, 811–25. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4739-3_71.

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7

Interrante, Leonard V., Kevin Moraes, Leo MacDonald, and Walter Sherwood. "Mechanical, Thermochemical, and Microstructural Characterization of AHPCS-Derived SiC." In Ceramic Transactions Series, 123–40. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118406014.ch11.

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8

Katsari, C. M., H. Che, D. Guye, A. Wessman, and S. Yue. "Microstructural Characterization and Mechanical Properties of Rene 65 Precipitates." In Proceedings of the 9th International Symposium on Superalloy 718 & Derivatives: Energy, Aerospace, and Industrial Applications, 629–41. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-89480-5_41.

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9

Nakamura, Toshio, Cunyou Lu, and Chad S. Korach. "Mechanical Properties of Tooth Enamel: Microstructural Modeling and Characterization." In Conference Proceedings of the Society for Experimental Mechanics Series, 171–79. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4614-0219-0_24.

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10

Zheng, Xiu Hua, Bilal Dogan, and Karl Heinz Bohm. "Microstructural and Mechanical Characterization of TiAl/Ti6242 Diffusion Bonds." In Materials Science Forum, 1393–400. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-432-4.1393.

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Тези доповідей конференцій з теми "Microstructural and mechanical characterizations":

1

Victoria, Patricia Iglesias, Weimin Yin, Surendra K. Gupta, and Steve Constantinides. "Microstructural Characterization of Sm-Co Magnets." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37106.

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Samarium cobalt permanent magnets have been widely used for their excellent intrinsic magnetic properties such as very high Curie temperature, high anisotropy fields and most importantly excellent temperature coefficients of induction and coercivity. These materials have continuing industrial interest especially for applications operating at elevated temperatures and in the presence of high demagnetizing fields, such as particle accelerators, high frequency traveling wave tubes (TWTs), servo-motors and automotive and aerospace applications. An area of opportunity for improving performance of SmCo magnets is increasing magnet toughness — resistance to fracture. Like all other sintered rare earth magnetic materials, SmCo magnets are based on intermetallic compounds which are intrinsically brittle and can crack in the course of fabrication, machine work, and installation in the application. Increased toughness would also reduce handling sensitivity of magnetized magnets. For many years, studies on SmCo magnets have been focused on their magnetic properties, but the mechanical characteristics, strengthening and toughening mechanisms have been rarely reported. Understanding the phase and structural transformations induced in the SmCo magnets during the manufacturing process offers insight into potential modifications — chemical or processing-related. In this study, microstructural characterizations of 1:5 and 2:17 Sm-Co magnets were carried out using optical and scanning electron microscopes. In scanning electron microscopy (SEM), backscattered electron imaging and energy dispersive X-ray (EDX) microanalysis were used to investigate different phases and oxides. Finally, crystal structure of the magnets was studied using an X-ray diffractometer (XRD). The study correlates the microstructure characterization with the thermal processing history of different grades of SmCo magnets.
2

Mahajan, Heramb P., Mohamed Elbakhshwan, Bruce C. Beihoff, and Tasnim Hassan. "Mechanical and Microstructural Characterization of Diffusion Bonded 800H." In ASME 2020 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/pvp2020-21502.

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Abstract Compact heat exchangers have high compactness and efficiency, which is achieved by joining a stack of chemically etched channeled plates through diffusion bonding. In the diffusion bonding process, compressive stress is applied on plates at elevated temperatures for a specified period. These conditions lead to atomic diffusion, which results in the joining of all plates into a monolithic block. The diffusion bonding temperatures are above recrystallization temperatures, which changes the mechanical and microstructural properties of the bonded metal. Hence, diffusion bonded material needs mechanical and microstructural property evaluation. In this study, Alloy 800H is selected to study the influence of the diffusion bonding process on mechanical and microstructure properties of base metal. A series of tensile, fatigue, creep, and creep-fatigue experiments are conducted on base metal 800H (BM 800H) and diffusion bonded 800H (DB 800H) to explore the mechanical properties. Microstructure evolution during diffusion bonding is studied and presented in the paper. The mechanical and microstructural observations indicated ductile fracture at room temperature and brittle failure with bond delamination at elevated temperatures. The microstructure evolution during diffusion bonding is studied through tensile, fatigue, creep and creep-fatigue tests, and the implied root causes for the mechanical property changes are investigated. Efforts are made to correlate the microstructure change with mechanical property change in DB 800H.
3

Yedida, V. V. Satyavathi, Hitesh Vasudev, and Shaik Vaseem Akram. "Mechanical and microstructural characterization of YSZ coating." In 14TH INTERNATIONAL CONFERENCE ON MATERIALS PROCESSING AND CHARACTERIZATION 2023. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0194067.

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4

Damião de Souza, Carlos, Vinicius Torres dos Santos, Flávia Gonçalves Lobo, Marcio Silva, Caique Movio Pereira de Souza, Rene Oliveira, Vanessa Seriacopi, and Wilson Carlos Silva Junior. "MICROSTRUCTURAL AND MECHANICAL CHARACTERIZATIONS OF THE BRONZE ALLOY CUSN8ZN4PB1 COMMONLY USED IN BEARINGS." In 27th Brazilian Congress of Thermal Sciences and Engineering. ABCM, 2023. http://dx.doi.org/10.26678/abcm.cobem2023.cob2023-0356.

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5

DOTCHEV, PETAR, SEYED HAMID REZA SANEI, ERIC STEINMETZ, and JASON WILLIAMS. "Nanocomposites: Manufacturing, Microstructural Characterization and Mechanical Testing." In American Society for Composites 2018. Lancaster, PA: DEStech Publications, Inc., 2018. http://dx.doi.org/10.12783/asc33/26060.

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6

Pereira, Gualter, Waldek Wladimir Bose Filho, Gustavo Teixeira, Fernando Ferreira Fernandez, and Julian Arnaldo Avila Diaz. "MICROSTRUCTURAL AND MECHANICAL CHARACTERIZATION OF WE43 MAGNESIUM ALLOY." In 25th International Congress of Mechanical Engineering. ABCM, 2019. http://dx.doi.org/10.26678/abcm.cobem2019.cob2019-1839.

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7

Zeferino, Danilo, Lucas Costa Vieira, Matheus Costa, Claudinei José de Oliveira, Marcelo Câmara, Pedro Henrique Antônio Santos, Sara Silva Ferreira de Dafé, and BRUNNA DE OLIVEIRA. "Microstructural and Mechanical Characterization of Hardox 450 Steel." In 24th ABCM International Congress of Mechanical Engineering. ABCM, 2017. http://dx.doi.org/10.26678/abcm.cobem2017.cob17-2892.

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8

Nadeau, Joseph C., and Mauro Ferrari. "Microstructural Optimization of a Functionally Gradient Layer." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0645.

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Abstract This paper addresses the microstructural optimization of an infinite, transversely isotropic layer which is free of tractions and subjected to a prescribed thermal gradient. The layer’s microstructure is characterized as a bi-phase composite in the form of a continuous matrix perfectly bonded to embedded spheroidal reinforcements. The microstructural characterization of the FGM is taken to be the volume fraction, aspect ratio and orientation distribution function of the second phase. The composite layer is made functionally gradient by taking the aforementioned parameters to vary through the thickness of the layer. The effective properties of the bi-phase composite are obtained by appropriate homogenization theories. The microstructural parameters are determined such that an objective function, defined in terms of strain energy and curvature, is minimized. Specific results are presented for an aluminum (Al) layer reinforced with silicon carbide (SiC). Comparisons are made to conventional coating technology.
9

Mashali, Farzin, Ethan M. Languri, Gholamreza Mirshekari, Jim Davidson, and David Kerns. "Microstructural and Thermal Characterization of Diamond Nanofluids." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87496.

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Conventional heat transfer fluids such as water, ethylene glycol, and mineral oil, that are used widely in industry suffer from low thermal conductivity. On the other hand, diamond has shown exceptional thermal properties with a thermal conductivity higher than five times of copper and about zero electrical conductivity. To investigate the effectiveness of nanodiamond particles in traditional heat transfer fluids, we study deaggregated ultra-dispersed diamonds (UDD) using X-ray diffraction analysis (XRD) and transmission electron microscopy (TEM). Furthermore, nanodiamond nanofluids were prepared at different concentrations in deionized (DI) water as the base fluid. Particle size distribution was investigated using TEM and the average particle size have been reported around 6 nm. The thermal conductivity of nanofluids was measured at different concentrations and temperatures. The results indicate up to 15% enhancement in thermal conductivity compared with the base fluid and thermal conductivity increases with temperature and particle loading. The viscosity raise in the samples have been negligible.
10

Soboyejo, W. O., C. Mercer, S. Allameh, B. Nemetski, N. Marcantonio, and J. Ricci. "Microstructural Characterization of Micro-Textured Titanium Surfaces." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2674.

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Abstract This paper presents the results of a multi-scale microstructural characterization of micro-textured Ti-6Al-4V surfaces that are used in biomedical implants. The hierarchies of substructural and microstructural features associated with laser micro-texturing, polishing and surface blasting with alumina pellets are elucidated via atomic force microscopy (AFM), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and optical microscopy (OM). The nano-scale roughness profiles associated with the different surface textures are elucidated via AFM. Sub-micron precipitates and dislocation substructures associated with wrought processing and laser processing are revealed by TEM. Micro- and meso-scale images of the groove structures are then discussed using OM and SEM. The implications of the results are discussed for the optimization of laser processing schemes for the fabrication of micro-textured surfaces that will facilitate the self organization of proteins, and the attachment of mammalian cells to the Ti-6Al-4V surfaces in biomedical implants.

Звіти організацій з теми "Microstructural and mechanical characterizations":

1

Tiku, Pussegoda, and Luffman. L52031 In-Situ Pipeline Mechanical Property Characterization. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), June 2003. http://dx.doi.org/10.55274/r0011133.

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The focus in the present study was to establish whether there is a reasonable correlation between the Charpy Vee Notch (CVN) toughness and the non-destructive Potential Difference (PD) measurements of ferritic-pearlitic steels having a range of CVN toughness values. Complete material characterization was carried out for six steels procured for this program. The characterization included chemical analysis, microstructural information, tensile properties and CVN transition curves. In addition, most of the data including the CVN transition curves were available for five suitable pipe line steels from a recent publication in the literature.
2

Sikka, V. K., C. R. Howell, F. Hall, and J. Valykeo. Microstructural and mechanical property characterization of ingot metallurgy ODS iron aluminide. Office of Scientific and Technical Information (OSTI), December 1997. http://dx.doi.org/10.2172/330687.

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3

Natesan, K., D. Renusch, B. W. Veal, and M. Grimsditch. Microstructural and mechanical characterization of alumina scales thermally developed on iron aluminide alloys. Office of Scientific and Technical Information (OSTI), November 1996. http://dx.doi.org/10.2172/437705.

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4

Yoon, Heayoung. In-situ Characterizations of Microstructural Degradation of Perovskite Solar Cells. Office of Scientific and Technical Information (OSTI), November 2023. http://dx.doi.org/10.2172/2208889.

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5

Sagartz, M. J., D. Segalman, and T. Simmermacher. Mechanical diode: Comparing numerical and experimental characterizations. Office of Scientific and Technical Information (OSTI), February 1998. http://dx.doi.org/10.2172/574174.

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6

Jablonski, David. DTRT57-09-C-10046 Digital Imaging of Pipeline Mechanical Damage and Residual Stress. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), February 2010. http://dx.doi.org/10.55274/r0011872.

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Анотація:
The purpose of this program was to enhance the characterization of mechanical damage in pipelines through the application of digital eddy current imaging. Lift-off maps can be used to develop quantitative representations of mechanical damage and magnetic permeability maps can be used to determine residual stress patterns around mechanical damage sites. Note that magnetic permeability is also affected by microstructure variations due to plastic deformation and plowing. High-resolution digital images provide an opportunity for automated analysis of both size and shape of damage and a permanent archival record that can be compared against future measurements to detect changes in size or shape of the damage. Also, multiple frequency measurements will enable volumetric and even through-wall imaging at mechanical damage sites to support further risk assessment efforts.
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Bhattacharya, Arunodaya, Xiang Chen, Kory D. Linton, Yukinori Yamamoto, Mikhail A. Sokolov, Logan N. Clowers, and Yutai Katoh. Mechanical properties and microstructure characterization of unirradiated Eurofer-97 steel variants for the EUROfusion project. Office of Scientific and Technical Information (OSTI), August 2018. http://dx.doi.org/10.2172/1471901.

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8

Natesan, K., D. L. Smith, P. G. Sanders, and K. H. Leong. Laser-welded V-Cr-Ti alloys: Microstructural and mechanical properties. Office of Scientific and Technical Information (OSTI), March 1998. http://dx.doi.org/10.2172/335378.

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9

Clark, Elizabeth J. Molecular and microstructural factors affecting mechanical properties of polymeric cover plate materials. Gaithersburg, MD: National Bureau of Standards, 1985. http://dx.doi.org/10.6028/nbs.ir.85-3197.

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10

Kumar, Ramasamy Sanjeev, Allaka Gopichand, and Rajumani Srinivasan. Fabrication, Microstructural and Mechanical Behaviour of Al-ZrO2 -TiC Hybrid Metal Matrix Composite. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, November 2021. http://dx.doi.org/10.7546/crabs.2021.11.10.

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