Academic literature on the topic 'Aluminum alloys Fracture Testing'

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Journal articles on the topic "Aluminum alloys Fracture Testing"

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Horikawa, Keitaro, Michiko Arayama, and Hidetoshi Kobayashi. "Quantitative Detection of Hydrogen Gas Release during Slow Strain Rate Testing in Aluminum Alloys." Materials Science Forum 1016 (January 2021): 568–73. http://dx.doi.org/10.4028/www.scientific.net/msf.1016.568.

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We have developed a new testing device which is capable of detecting hydrogen gas release during slow strain rate tensile testing (SSRT) under ordinary pressure. The device is composed of an SSRT machine equipped with a closed chamber with an inspection window that is connected to gas chromatography with a semiconductor hydrogen sensor. Local strain distribution in the specimen during the SSRT is monitored dynamically with a digital image correlation (DIC) method. Hydrogen was pre-charged to aluminum alloys by means of friction in water process. Using the device, it was shown that hydrogen was released particularly in the stage of plastic deformation and fracture. In addition, the hydrogen gas release at the moment of fracture was clearly increased when the alloys were hydrogen-charged and tested at a slow strain rate. When we calculated hydrogen gas release from the fracture surface in Al-Zn-Mg base alloys tested at 3.3×10-6 s-1, the hydrogen amount was estimated to be 6.24×10-10 mol /mm2 in a hydrogen-uncharged alloy, and 1.30×10-9 mol / mm2 in a hydrogen-charged alloy.
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Zhang, Xiao Min, Jian Mao, Yun Che, and Zhong Ke Zhang. "Investigations on the Fatigue Property of the High-Strength and Toughness 211Z Casting Aluminium Alloy." Applied Mechanics and Materials 423-426 (September 2013): 197–201. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.197.

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211Z is a new type of high strength and toughness Al-Cu-Mn casting aluminum alloy. With the aid of GPS-100 high-cycle fatigue testing machine and DDL100 multifunction tensile testing machine, conventional mechanics performance tests and high-cycle fatigue tests were carried out in this paper. The conventional mechanical property results show that the tensile strength is 477.5 MPa, the theory yield strength is 397.5 MPa and the elongation is 6.625%. Fatigue experiments were performed with load control at room temperature and R =-1 in ambient air. The tensile and compression fatigue strength is 130 MPa under ten million times fatigue test, and S-N fatigue life curve of this alloy was also given in the investigations. 211Z casting aluminum alloy possessing high fatigue strength can be attributed to the fact that it owns high strength and good plasticity simultaneously. The microstructure analysis of fatigue fracture appearance shows that, the fatigue crack initiation behavior of this aluminium alloys depends mainly on the region possessing defects under the surface, there has only one crack source, which means it is belongs to low nominal stress unidirectional bending. In the crack growth stage, the width of fatigue striations decreases with the increase of stress, and a few secondary cracks were found in this stage. When cracks finally losed stability, an instantaneous fracture occured in the investigated samples. Shear lips and dimples were found in the fracture appearance and the final fracture is belongs to ductile fracture.
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Lednianskyi, O. F., S. P. Bisyk, A. F. Sanin, and V. P. Poshyvalov. "Study of the applicability of porous pressings of aluminum and aluminum alloys as energy-absorbing elements." Technical mechanics 2020, no. 4 (December 10, 2020): 109–16. http://dx.doi.org/10.15407/itm2020.04.109.

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This work reports the results of experimental studies on the applicability of porous pressings of aluminum alloys to passive safety systems. The porous pressings were made from aluminum and aluminum alloy powders with a particle size up to 200 ?m using a hydraulic press. The porosity was varied by varying the pressure in the press hydrosystem and the pressing force. The specimens were not sintered, and no plasticizer was added. To determine which specimen characteristic, the mass or the porosity, is more important, specimens of the same mass (0.01 kg) were used [the deviation did not exceed (2.7 ? 2.8) % ]. To determine the impact absorption ability of the porous pressings of aluminum and aluminum alloy powders, a vertical impact testing machine was used. The ram mass was 22.5 kg (weight 220 N), the fall speed was 5 m/s, and the fall energy was 300 J. The impact absorption ability of the porous pressings was determined by comparing the accelerations and rebound height of the ram in the presence of a porous pressing with their calculated free-fall values. The experiments showed that the use of specimens of maximum porosity decreases the impact energy by the value of the plastic work of deformation and the fracture energy. A comparison of the performance of different specimens showed that the energy absorption ability increases with porosity. As demonstrated by the experiments, porous pressings of aluminum and aluminum alloys can be used as energy -absorbing elements of passive safety systems for commercial and armored combat vehicles, and the impact absorption ability of porous fillers, in particular porous pressings of aluminum and aluminum alloys, can be determined using vertical impact testing machines. Using porous pressings of aluminum and aluminum alloys as an energy-absorbing material decreases the impact acceleration by a factor of 30 to 85 at an impact speed up to 5 m/s. The ability of a pressing to reduce the impact acceleration depends on its dimensions and porosity to a greater extent than on its mass. The greatest decrease in impact acceleration is provided by porous pressings of maximum porosity, in which the impact energy is converted to the plastic work of deformation and the fracture energy.
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Holroyd, N. J. Henry, Timothy L. Burnett, Benjamin C. Palmer, and John J. Lewandowski. "Estimation of environment-induced crack growth rate as a function of stress intensity factors generated during slow strain rate testing of aluminum alloys." Corrosion Reviews 37, no. 5 (September 25, 2019): 499–506. http://dx.doi.org/10.1515/corrrev-2019-0031.

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AbstractIn this contribution, we introduce a simple approach to quickly estimate the environment-induced crack velocity (CV) as a function of the calculated applied stress intensity factor (K) developed during the slow strain rate testing of aluminum alloys exposed to aqueous or humid air-type environments. The CV-K behavior for a commercial aluminum-magnesium alloy, AA5083-H131, sensitized and pre-exposed to a 0.6 m NaCl solution has been estimated from slow strain rate test data. The predicted threshold K and crack velocities match recently published data for the same alloy in similarly sensitized conditions where the CV-K data were obtained using state-of-the-art fracture mechanics-based testing.
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Sharapova, Dinaida M., Mikhail G. Sharapov, and Nikolay I. Sharonov. "Structure Formation of Butt Joints Made of Aluminum Alloys to Ensure the Quality of Mechanical Engineering Products." Materials Science Forum 1022 (February 2021): 119–26. http://dx.doi.org/10.4028/www.scientific.net/msf.1022.119.

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The article discusses the problems of ensuring high-quality formation and normative properties of butt joints of the 1560M and 1980T1 (AMg6 and B48) aluminum alloys as applied to engineering. A method is proposed for joining materials by means of EBW using an electron beam sweep. Homogeneous and dissimilar joints have been investigated, heat treatment of joint from the 1980T1 alloy and a dissimilar joint from the 1560M + 1980T1 alloys is recommended. The paper also presents the results of mechanical properties testing, the corrosion resistance and the delayed fracture tests. A welding technology that makes it possible to obtain high-quality butt-welded joints from aluminum alloys in thicknesses up to 40 mm has been developed and implemented.
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Ponnusamy, Muruganantham, S. Suresh Pungaiah, M. Senthil Prabhu, B. R. Ramji, Y. Srinivas, and Selvakumar Periyasamy. "Importance of Hardening Effect and Its Analysis on Diametrical Fractured Ends of Tensile Testing of Al and Steel." Advances in Materials Science and Engineering 2022 (July 15, 2022): 1–10. http://dx.doi.org/10.1155/2022/8579749.

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The hardening effect varies deliberately to elevate the properties of alloy specimens either in ferrous or nonferrous materials. The cup and cone fracture theory explains the effect of hardening through heat treatment of the specimen. The hardening effects are imposed on the specimen by the furnace heating and hot pressing method. The neck formation and the elongation levels are evaluated and compared for both heat-treated and non-heat-treated specimens of steel and aluminum alloys. The simulation tools are used to predict the compressive and elongation levels by obtaining the stresses and deflections at various nodal points. The suitable heat treatment was indicated by the single or twice method of heat adoption over the steel and aluminum specimens. The fracture analysis and experimental results are compared among the hardened or non-heat-treated specimens.
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Gu, Jia Xing, Shang Lei Yang, Chen Feng Duan, Qi Xiong, and Yuan Wang. "Microstructure and Mechanical Characterization of Laser Welded 6013 Aluminum Alloys Overlap Joint." Key Engineering Materials 795 (March 2019): 49–53. http://dx.doi.org/10.4028/www.scientific.net/kem.795.49.

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In this paper, 6013 aluminum alloy with the thickness of 2.5mm was overlap welded by fiber laser. The microstructure, mechanical properties and fracture morphology of the joint was tested and observed by Optical Microscope, material testing machines and Scanning Electron Microscope, thus the failure and fracture mechanism of the welded joint are analyzed. The results showed that good shape of weld was achieved under the optimal welding parameters. Equiaxial as-cast microstructures exist in the welding center and the columnar grains are formed near the fusion line in the WZ. The hardness of weld zone is the lowest in the joint, which is about 72 HV, about 57% of that of BM. The tensile shear strength of the joint is 96Mpa, about 25% of tensile strength of BM. The fracture is happened in WZ and the brittle fracture mode is dominated with shear dimples and shear planes.
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Kou, L. Y., W. Y. Zhao, X. Y. Tuo, G. Wang, and C. R. Sun. "Effect of stress triaxiality on fracture failure of 6061 aluminium alloy." Journal of Mechanical Engineering and Sciences 14, no. 2 (June 23, 2020): 6961–70. http://dx.doi.org/10.15282/jmes.14.2.2020.33.0545.

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The effect of stress triaxiality on mechanical properties of 6061 aluminium alloy extruded profiles with different specimens was studied. Macroscopic mechanical property of the various specimen was got through universal testing machine. At the same time, stress triaxiality of different specimens was obtained using the method of finite element simulation. And then the fracture strain of each specimen was outputted by DIC. Fracture modes of 6061 aluminium alloy with different stress triaxiality were studied by SEM. The results show that taking tensile samples as comparison, the cross-sectional area of some notched specimens decreases and the peak load increases. Among them, the minimum cross-sectional area of the R5 central hole specimen is 20% smaller than that of the tensile sample, and the peak load is 28% larger. The fracture strain of the alloy increased with the decrease of stress triaxiality. For the same notch specimens, along the path direction, stress triaxiality of R5 notch specimens, R5 Center-hole specimens and R20 Arc notched specimens increased 47%, 17.8%, 25% respectively. According to the analysis of fracture morphology, the main fracture of 6061 aluminium alloy was ductile fracture. When the stress triaxiality is large, the dimples are small and sparsely distributed, and when the stress triaxiality is small, the dimple is large and evenly distributed. Finally, the Johnson-Cook model material parameters of 6061 aluminum alloy are fitted based on the tensile test results of different shapes of specimens, which can accurately simulate the elastic-plastic deformation and fracture instability of 6061 aluminum alloy under different stress states.
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Shamim, Shahrukh, Gaurav Sharma, and Chandrabalan Sasikumar. "The Effect of Intermetallic Phases on Ductile to Brittle Transition of Aluminium-Iron Alloy." Applied Mechanics and Materials 592-594 (July 2014): 770–75. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.770.

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The effect of intermetallic phases and grain size on ductile to brittle transition temperature of Aluminium-Iron alloy (Al–11% Fe) was investigated in this research work. An Izod impact testing method was adopted to study the DBTT in the temperature interval of 77 K to 373 K. The ductile-brittle transition points: fracture transition plastic (FTP), fracture-appearance transition temperature (FATT), impact energy transition temperature (IETT), fractional surface area of cleavage (brittle) and fibrous (ductile) fractures and grain size of the samples were also determined. The fracture toughness of Al-Fe alloy found decreasing with temperature in contrast to conventional materials. The fractographic investigation revealed that the microstructural changes play a major role in determining the fracture toughness of these alloys. Annealing of these samples slightly improved the fracture toughness as the spherical morphology of intermetallic particles resists the crack propagation.
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Shi, Laixin, Lin Xiang, Jianquan Tao, Qiang Chen, Jun Liu, and Yong Zhong. "Actual Marine Atmospheric Pre-Corrosion Fatigue Performance of 7075-T73 Aluminum Alloy." Metals 12, no. 5 (May 21, 2022): 874. http://dx.doi.org/10.3390/met12050874.

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Actual marine atmospheric pre-corrosion behavior and its effect on the fatigue performance of 7075-T73 aluminum alloy were studied by means of marine atmospheric outdoor exposure testing and fatigue testing. The surface and cross-sectional microstructures of aluminum alloy specimens after different numbers of days of exposure were analyzed. Localized pitting, and intergranular and exfoliation corrosion occurred during the outdoor exposure of aluminum alloy specimens in a marine atmosphere. The degree of severity of atmospheric corrosion increased with increasing duration of exposure. The effects of Fe-rich constituent particles (Al23CuFe4) and grain boundary precipitates (MgZn2) on the marine atmospheric corrosion behavior were discussed. In addition, when the exposure time was increased from 0 days to 15 days, the average fatigue life of aluminum alloy specimens decreased dramatically from about 125.16 × 104 cycles to 16.58 × 104 cycles. As the exposure time was further increased to 180 days, the average fatigue life slowly decreased to about 6.21 × 104 cycles. The fatigue fracture characteristics and the effect mechanism of marine atmospheric pre-corrosion on the fatigue life of 7075-T73 aluminum alloy were also analyzed.
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Dissertations / Theses on the topic "Aluminum alloys Fracture Testing"

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Pouillier, Édouard. "Hydrogen-induced Intergranular Fracture of Aluminum-Magnesium Alloys." Paris, ENMP, 2011. http://www.theses.fr/2011ENMP0095.

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Les alliages d'aluminium de la famille 5XXX (Al-Mg) sont utilisés dans la fabrication de pièces de structure en raison de leurs bonnes propriétés mécaniques, de soudabilité et de résistance à la corrosion. Toutefois, dans des conditions d'utilisation sévères, une synergie entre la déformation plastique et les réactions de corrosion se produit et entraîne une fissuration intergranulaire, par corrosion sous contrainte (CSC), voire par fragilisation par l'hydrogène (FPH). La ductilité passe de 50% à quelques %, montrant une fissuration fragile. La compréhension des mécanismes qui régissent ce type de fissuration nécessite la détermination de l'importance respective des principaux facteurs (notamment mécaniques et chimiques). Cette étude se concentre sur le rôle de la plasticité cristalline dans le cas de la fragilisation par l'hydrogène. Pour ce faire, des éprouvettes préalablement fragilisées en surface par l'hydrogène (via un chargement cathodique) ont été sollicitées en traction. Ces essais ont été menés in situ dans le microscope électronique à balayage. Les résultats de corrélation d'image ont montré que les fissures s'amorcent dans des régions faiblement déformées adjacentes à des régions fortement déformées, là où les contraintes intergranulaires les plus élevées sont attendues. Par ailleurs, la cartographie des orientations cristallines des surfaces observées au cours des essais a servi de base à un maillage réaliste de la structure, qui a permis de calculer les champs de contraintes et de déformation locaux à l'aide d'un modèle de plasticité cristalline. Le modèle a été validé par la confrontation des prédictions à la mesure des champs de déformation et aux courbes de chargement macroscopique. Les contraintes ainsi estimées par simulation numérique ont permit d'établir un critère de rupture. Ce critère de rupture a ensuite été incorporé dans la simulation de microstructure quasi-2D grâce à un modèle de zone cohésive. Les résultats obtenus en accord avec les observations ont mis en avant la nécessité de développer une méthodologie permettant de prendre en compte les effets de la microstructure situés sous les surfaces étudiées. Ces microstructures ont été caractérisées à l'aide de plusieurs techniques d'analyse 3D de la morphologie microstructurale des agrégats polycristallins (EBSD par couches successives et par microtomographie rayons X des joints de grains à l'aide de diffusion de gallium). Les résultats des simulations avec les microstructures réelles en 3D dans le domaine élastique sont cohérant avec ceux obtenus en 2D pour des agrégats composés de 40 grains
Aluminium alloys that are strengthened by alloying elements in solid solution may present a particular sensitivity to intergranular stress corrosion cracking as a result of intergranular dissolution. In Al-5Mg alloys such as AA5083, precipitation of the β-phase (Al3Mg2) at grain boundaries strongly favours intergranular fracture. Previous experimental studies revealed that local plasticity seems to play a significant role in crack initiation. Nevertheless, the exact role of crystal plasticity in the vicinity of grain boundaries is not well understood. The main goal of this doctoral thesis is two-fold: (i) to study the role of the local stress and strain fields on the mechanism of intergranular stress corrosion cracking and, based on such understanding, (ii) to develop a micro-mechanics based model to predict the onset of grain boundary cracking, through a suitably defined failure criterion, and the subsequent intergranular crack propagation. An experimental procedure based on in-situ tensile tests within the chamber of an scanning electron microscope was developed to measure the evolution of local strain fields at various microstructural scales and of lattice orientation using digital image correlation and electron backscatter diffraction (EBSD) techniques, respectively. Digital image correlation techniques were used in particular over areas comprising just a few grains up to mesoscopic regions of the polycrystal to quantify the deformation and strain fields required in the multi-scale study of intergranular fracture. From these observations, it was established that interfaces between two grains which have undergone little amount of deformation but lying within a neighbourhood of significantly deformed grains are the first to develop micro-cracks. In addition, X-Ray tomography and serial EBSD sectioning analyses revealed that cracked grain boundaries were perpendicular to the applied tensile load, where maximum tensile tractions are expected. To determine the role of local stresses and local plasticity on the mechanisms of intergranular fracture, a dislocation mechanics based crystal plasticity model was employed to describe the constitutive behaviour of each grain in the finite element model of the in-situ experiments. The model parameters were calibrated as a function of the solid solution magnesium content in the aluminium alloy. Measured EBSD maps were relied upon to define the orientation of the discrete grain regions of the in-situ specimens in the corresponding multi-scale finite element (FE) models. From the FE results, a range of threshold values of the normal grain boundary tractions needed to initiate intergranular cracks was identified. This finding is in close agreement with the predictions from an analytical solution of a simplified model of intergranular cracking based on an extension of Eshelby's theory for inclusions. Finally, a cohesive zone model calibrated with the critical grain boundary tractions and typical surface energies was added to the FE model of the polycrystal. A comparison between the experimental and numerical results reveals a good agreement with the observed experimental cracking pattern
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Lee, Jonghee. "Fracture analysis of a propagating crack in a ductile material /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/7081.

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Zafari, Farzad. "Experimental and numberical study of elastic-plastic mixed-mode fracture /." Thesis, Connect to this title online; UW restricted, 1997. http://hdl.handle.net/1773/7034.

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Jordon, James Brian. "EXPERIMENTS AND MODELING OF FATIGUE AND FRACTURE OF ALUMINUM ALLOYS." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11062008-110529/.

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In this work, understanding the microstructural effects of monotonic and cyclic failure of wrought 7075-T651 and cast A356 aluminum alloys were examined. In particular, the structure-property relations were quantified for the plasticity/damage model and two fatigue crack models. Several types of experiments were employed to adapt an internal state variable plasticity and damage model to the wrought alloy. The damage model was originally developed for cast alloys and thus, the model was modified to account for void nucleation, growth, and coalescence for a wrought alloy. In addition, fatigue experiments were employed to determine structure-property relations for the cast alloy. Based on microstructural analysis of the fracture surfaces, modifications to the microstructurally-based MultiStage fatigue model were implemented. Additionally, experimental fatigue crack results were used to calibrate FASTRAN, a fatigue life prediction code, to small fatigue-crack-growth behavior. Lastly, a set of experiments were employed to explore the damage history effect associated with cast and wrought alloys and to provide motivation for monotonic and fatigue modeling efforts.
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Lyons, Jed S. "Microstructural influences on fracture toughness in A357 cast aluminum alloys." Thesis, Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/16689.

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Deshpande, Nishkamraj U. "Characterization of fracture path and its relationship with microstructure and fracture toughness of aluminum alloy 7050." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/20210.

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Hilty, Eric. "Influence of Welding and Heat Treatment on Aluminum Alloys." University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1396877051.

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Vasudevan, Satish. "AN INVESTIGATION OF QUASI-STATIC BEHAVIOR, HIGH CYCLE FATIGUE AND FINAL FRACTURE BEHAVIOR OFALUMINUM ALLOY 2024 AND ALUMINUM ALLOY 2219." Akron, OH : University of Akron, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1193668130.

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Thesis (M.S.)--University of Akron, Dept. of Mechanical Engineering, 2007.
"December, 2007." Title from electronic thesis title page (viewed 02/23/2008) Advisor, T. S. Srivatsan; Faculty readers, Craig Menzemer, Amit Prakash; Department Chair, Celal Batur; Dean of the College, George K. Haritos; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.
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Dadkhah, Mahyar Sh. "Analysis of ductile fracture under biaxial loading using moiré interferometry /." Thesis, Connect to this title online; UW restricted, 1988. http://hdl.handle.net/1773/7026.

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Battocchi, Dante. "The Development, Characterization and Testing of Mg-rich Primers." Diss., North Dakota State University, 2012. https://hdl.handle.net/10365/26453.

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Aluminum alloys are widely used in aircraft industry for their strength and light weight. Those alloys that are hardened by precipitation, especially the Copper-rich of the 2000 series, are prone to corrosion and are protected against it using chromate containing coatings. The primary component of these coating systems is Chromium 6+ (CrVI) that has been found to be very toxic in the environment and carcinogenic, toxic and mutagenic in humans. The Mg-rich primer development is the result of a successful multi-year project funded by the US Air-force with its objective the replacement of coatings based on CrVI with a class of coatings less toxic and with comparable protective performances. The Mg rich primer fulfilled the USAF requirements and it is currently undergoing commercial and military qualifications testing. The use of Mg as one of the active pigments in coatings allows the primer to protect the underlying Al sacrificially, not considered possible for this substrate until now. Mg is anodic to most of the other structural metals and when particulate Mg became available commercially, the concept of the primer was first developed by analogy to Zn-rich coatings for steel. When Mg and Al are in contact and immersed in a corrosive environment, magnesium corrodes preferentially and protects the aluminum.
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Books on the topic "Aluminum alloys Fracture Testing"

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Höhne, Volker. Mechanische und bruchmechanische Bewertung des Bruchverhaltens von WIG-Schweissverbindungen der Aluminiumlegierung A1Mg4,5Mn bei statischer, dynamischer und zyklischer Beanspruchung. Leipzig: Deutscher Verlag für Grundstoffindustrie, 1991.

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Piascik, Robert S. Environmental fatigue in aluminum-lithium alloys. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1992.

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Fracture resistance of aluminum alloys: Notch toughness, tear resistance, and fracture toughness. Washington, D.C: Aluminum Association, 2001.

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Huang, F. H. Fracture properties of irradiated alloys. Richland, WA: Avante Pub., 1995.

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Beaver, P. W. Experimental and theoretical determination of J(IC) for 2024-T351 aluminium alloy. Melbourne, Australia: Aeronautical Research Laboratories, 1986.

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Schwarmann, L. Material data of high-strength aluminium alloys for durability evaluation of structures: Fatigue strength, crack propagation, fracture toughness. Düsseldorf: Aluminium-Verlag, 1986.

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Gross, Jürgen. Eigenschaften von Aluminium-Silicium-Legierungen in unterschiedlichen Behandlungszuständen unter besonderer Beachtung des Gefügeeinflusses auf die Festigkeitswerte und auf das Bruchverhalten. Berlin: Wissenschaft und Technik Verlag, 1992.

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S, Agarwala Vinod, Ugiansky G. M, and International Symposium on Corrosion Testing of Aluminum Alloys (1990 : San Francisco, Calif.), eds. New methods for corrosion testing of aluminum alloys. Philadelphia, PA: ASTM, 1992.

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Agarwala, VS, and GM Ugiansky, eds. New Methods for Corrosion Testing of Aluminum Alloys. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 1992. http://dx.doi.org/10.1520/stp1134-eb.

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1950-, Cheng Shu-hong, and Mobley Carroll E. 1941-, eds. A fractography atlas of casting alloys. Columbus, Ohio: Battelle Press, 1992.

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Book chapters on the topic "Aluminum alloys Fracture Testing"

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Kang, Jidong, and Kevin Gong. "Determination of Fracture Behavior of AA6060 Aluminum Alloy Extrusion Using Digital Image Correlation3." In Evaluation of Existing and New Sensor Technologies for Fatigue, Fracture and Mechanical Testing, 13–31. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2015. http://dx.doi.org/10.1520/stp158420140058.

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Kang, Jidong, and Guowu Shen. "A Novel Shear Test Procedure for Determination of Constitutive Behavior of Automotive Aluminum Alloy Sheets." In Application of Automation Technology in Fatigue and Fracture Testing and Analysis, 50–62. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2014. http://dx.doi.org/10.1520/stp157120130076.

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Bruhis, M., J. Dabrowski, and J. R. Kish. "Measuring Mechanical Properties of Fillet Arc T-Welded Aluminum Alloy AA7xxx Extrusions Using Digital Image Correlation." In Evaluation of Existing and New Sensor Technologies for Fatigue, Fracture and Mechanical Testing, 3–12. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2015. http://dx.doi.org/10.1520/stp158420140050.

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Toda, Hiroyuki, Hideyuki Oogo, Hideki Tsuruta, Keitaro Horikawa, Kentaro Uesugi, Akihisa Takeuchi, Yoshio Suzuki, and Masakazu Kobayashi. "Origin of Ductile Fracture in Aluminum Alloys." In ICAA13: 13th International Conference on Aluminum Alloys, 565–70. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118495292.ch83.

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Toda, Hiroyuki, Hideyuki Oogo, Hideki Tsuruta, Keitaro Horikawa, Kentaro Uesugi, Akihisa Takeuchi, Yoshio Suzuki, and Masakazu Kobayashi. "Origin of Ductile Fracture in Aluminum Alloys." In ICAA13 Pittsburgh, 565–70. Cham: Springer International Publishing, 2012. http://dx.doi.org/10.1007/978-3-319-48761-8_83.

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Kwon, Yong Nam, Kyu Hong Lee, and Sung Hak Lee. "Fracture Toughness and Fracture Mechanisms of Cast A356 Aluminum Alloys." In The Mechanical Behavior of Materials X, 633–36. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-440-5.633.

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Ghali, E. "Testing of Aluminum, Magnesium, and Their Alloys." In Uhlig's Corrosion Handbook, 1103–6. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9780470872864.ch81.

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Reynolds, Anthony P., Bob Wheeler, and Kumar V. Jata. "Deformation, Fracture and Fatigue in a Dispersion Strengthened Aluminum Alloy." In Lightweight Alloys for Aerospace Application, 87–97. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118787922.ch8.

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Bouazara, M. "Improvement in the Design of Automobile Upper Suspension Control Arms Using Aluminum Alloys." In Damage and Fracture Mechanics, 101–12. Dordrecht: Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2669-9_11.

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Denzer, D. K., R. J. Rioja, G. H. Bray, G. B. Venema, and E. L. Colvin. "The Evolution of Plate and Extruded Products with High Strength and Fracture Toughness." In ICAA13: 13th International Conference on Aluminum Alloys, 587–92. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118495292.ch86.

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Conference papers on the topic "Aluminum alloys Fracture Testing"

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Farahmand, Bob. "Fracture Properties Estimation of Aluminum Lithium Alloys Subjected to Exposure Time (Analytical Approach Versus Physical Testing)." In 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-1937.

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Balch, Dorian K., Steve H. Goods, and Chris San Marchi. "Fabrication and Testing of Electron Beam Welded Alloy AA2219 Aluminum Pressure Vessels for High-Pressure Hydrogen Service." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28858.

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Aluminum alloys offer significant advantages for hydrogen service such as low weight, improved uniformity of properties relative to forged austenitic stainless steels, and immunity to embrittlement in the presence of dry hydrogen. For these reasons aluminum alloys are now being considered for high-pressure hydrogen isotope pressure vessel applications where forged stainless steels have been the standard materials of construction for decades. In particular, alloy AA2219 is being evaluated due to its excellent weldability, microstructural stability, and good mechanical and fracture toughness properties. Prototype AA2219 pressure vessels have been fabricated and tested, including electron beam weld development, weld hardness and tensile testing prior to and after post-weld heat treatment, and burst testing. The design, manufacture, and testing of AA2219 pressure vessels will be discussed, including an ongoing long-term shelf storage program where pressure vessels are loaded with gaseous hydrogen at pressure of 103 MPa (85% of the burst pressure for these vessels).
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Salandro, Wesley A., Joshua J. Jones, Timothy A. McNeal, John T. Roth, Sung-Tae Hong, and Mark T. Smith. "Effect of Electrical Pulsing on Various Heat Treatments of 5XXX Series Aluminum Alloys." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72512.

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Previous studies have shown that the presence of a pulsed electrical current, applied during the deformation process of an aluminum specimen, can significantly improve the formability of the aluminum without heating the metal above its maximum operating temperature range. The research herein extends these findings by examining the effect of electrical pulsing on 5052 and 5083 Aluminum Alloys. Two different parameter sets were used while pulsing three different heat treatments (As Is, 398°C, and 510°C) for each of the two aluminum alloys. For this research, the electrical pulsing is applied to the aluminum while the specimens are deformed, without halting the deformation process. The analysis focuses on establishing the effect the electrical pulsing has on the aluminum alloy’s various heat treatments by examining the displacement of the material throughout the testing region of dogbone shaped specimens. The results from this research show that pulsing significantly increases the maximum achievable elongation of the aluminum (when compared to baseline tests conducted without electrical pulsing). Significantly reducing the engineering flow stress within the material is another beneficial effect produced by electric pulsing. The electrical pulses also cause the aluminum to deform non-uniformly, such that the material exhibits a diffuse neck where the minimum deformation occurs near the ends of the specimen (near the clamps) and the maximum deformation occurs near the center of the specimen (where fracture ultimately occurs). This diffuse necking effect is similar to what can be experienced during superplastic deformation. However, when comparing the presence of a diffuse neck in this research, electrical pulsing does not create as significant of a diffuse neck as superplastic deformation. Electrical pulsing has the potential to be more efficient than traditional methods of incremental forming since the deformation process is never interrupted. Overall, with the greater elongation and lower stress, the aluminum can be deformed quicker, easier, and to a greater extent than is currently possible.
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Nagai, Keisuke, Toshihiko Kuwabara, Andrey Ilinich, and George Luckey. "Measurement of fracture stress for 6000-series extruded aluminum alloy tube using multiaxial tube expansion testing method." In PROCEEDINGS OF THE 21ST INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2018. Author(s), 2018. http://dx.doi.org/10.1063/1.5035017.

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Luo, M., T. Wierzbicki, and D. Mohr. "Anisotropic Ductile Fracture of AA6260-T6 Al-Alloy Extrusions." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64344.

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The anisotropic ductile fracture of AA6260-T6 extruded aluminum alloy profiles is studied within a phenomenological framework. A basic fracture testing program covering a wide range of stress states and three distinct material orientations (i.e. 0°, 45° and 90° with respect to the extrusion direction) is carried out. It comprises notched tensile specimens, tensile specimens with a central hole, butterfly shear specimens and circular punch specimens. The surface strain fields are determined using Digital Image Correlation (DIC), while a finite element simulation is performed of each experiment to determine the local stress and strain histories at the material point where fracture initiates. The experimental-numerical analysis reveals a strong anisotropy of the present material ductility/fracture, which cannot be approximated by existing isotropic fracture models. A new non-associated anisotropic fracture model is proposed incorporating the stress state dependent Modified Mohr-Coulomb (MMC) weighting function and a material direction sensitive damage rule. All seven fracture model parameters are identified for the present extruded aluminum using an inverse method. The good agreement of the model predictions with the results from fourteen distinct experiments demonstrates the remarkable predictive capabilities of the proposed model.
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Mayer, Robert R., Weigang Chen, and Anil Sachdev. "Crashworthiness Performance of Mass-Efficient Extruded Structures." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-39077.

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Theoretical, numerical and experimental studies were conducted on the axial crushing behavior of traditional single-cell and innovative four-cell extrusions. Two commercial aluminum alloys, 6061 and 6063, both with two tempers (T4 and T6), were considered in the study. Testing coupons taken from the extrusions assessed the nonlinear material properties. A theoretical solution was available for the one-cell design, and was developed for the mean crushing force of the four-cell section. Numerical simulations were carried out using the explicit finite element code LS-DYNA. The aluminum alloy 6063T4 was found to absorb less energy than 6061T4, for both the one-cell and four-cell configurations. Both 6061 and 6063 in the T6 temper were found to have significant fracture in the experimental testing. Theoretical analysis and numerical simulations predicted a greater number of folds for the four-cell design, as compared to the one-cell design, and this was confirmed in the experiments. The theoretical improvement in energy absorption of 57% for the four-cell in comparison with the one-cell design was confirmed by experiment. The good agreement between the theoretical, numerical and experimental results allows confidence in the application of the theoretical and numerical tools for both single-cell and innovative four-cell extrusions. It was also demonstrated that these materials have very little dynamic strain rate effect.
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Cipolla, Russell C., Michael Garner, and Arden J. Aldridge. "Mechanical Properties of Dealloyed Aluminum Bronze Large-Bore Castings in Essential Cooling Water Service." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-66254.

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Metal loss caused by selective leaching of aluminum (referred to herein as dealloying) in certain aluminum-bronze (Al-Brz) alloys is an environmentally-induced degradation mechanism in piping systems containing cast components exposed to marine, brackish, or raw water service. Examples of this form of degradation have been observed in ASME Code Class 3 Essential Cooling Water systems. Mechanical properties for tensile strength and fracture toughness of Al-Brz static and centrifugal castings, fabricated to ASME SB-148 CA952 and CA954 specifications, can locally degrade in service due to dealloying under long exposure to aggressive water environments. This paper presents the results on the reduction in mechanical strength as a result of dealloying. A mechanical testing program was completed where 20 tensile and 22 fracture toughness specimens were tested to determine the reduction in mechanical properties from no dealloying (virgin condition) to various amounts of dealloying up to 100% dealloyed condition measured across the specimen. The specimens were fabricated from components removed from service (some components being in service for over 25 years). The data were plotted as a function of percent dealloying where a systematic decrease in properties was seen directly dependent the amount of dealloyed material in the cross-section of the specimen.
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Dewan, Mohammad W., M. A. Wahab, and Ayman M. Okeil. "Effect of Weld Defects on Tensile Properties of Lightweight Materials and Correlations With Phased Array Ultrasonic Nondestructive Evaluation." In ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/msec2014-3950.

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Fusion welding of Aluminum and its alloys is a great challenge for the structural integrity of lightweight material structures. One of the major shortcomings of Aluminum alloy welding is the inherent existence of defects in the welded area. In the current study, tests have been conducted on tungsten inert gas (TIG) welded AA6061-T651 aluminum alloy to determine the effects of defect sizes and its distribution on fracture strength. The information will be used to establish weld acceptance/rejection criteria. After welding, all specimens were non-destructively inspected with phased array ultrasonic and measured the projected area of the defects. Tensile testing was performed on inspected specimens containing different weld defects: such as, porosity, lack of fusion, and incomplete penetration. Tensile tested samples were cut along the cross section and inspected with Optical Microscope (OM) to measure actual defect sizes. Tensile properties were correlated with phased array ultrasonic testing (PAUT) results and through microscopic evaluations. Generally, good agreement was found between PAUT and microscopic defect sizing. The tensile strength and toughness decreased with the increase of defect sizes. Small voids (area ratio <0.04) does not have significant effect on the reduction of tensile strength and toughness values. Once defective “area ratio (cross sectional area of the defect) / (total specimen cross sectional area)” reached a certain critical value (say, 0.05), both strength and toughness values decline sharply. After that critical value both the tensile strength and toughness values decreases linearly with the increase of defect area ratio.
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Kolluri, M., F. H. E. de Haan-de Wilde, H. S. Nolles, A. J. M. de Jong, and F. A. van den Berg. "Irradiation Induced Changes in Mechanical and Microstructural Properties of the High Flux Reactor Vessel: Update of the Results From 2014 and 2015 Surveillance Test Campaigns." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65007.

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The reactor vessel of the High Flux Reactor (HFR) in Petten has been fabricated from Al 5154 - O alloy grade with a maximum Mg content of 3.5 wt. %. The vessel experiences large amount of neutron fluences (notably at hot spot), of the order of 1027 n/m2, during its operational life. Substantial damage to the material’s microstructure and mechanical properties can occur at these high fluence conditions. To this end, a dedicated surveillance program: SURP (SURveillance Program) is executed to understand, predict and measure the influence of neutron radiation damage on the mechanical properties of the vessel material. In the SURP program, test specimens fabricated from representative HFR vessel material are continuously irradiated in two specially designed experimental rigs. A number of surveillance specimens are periodically extracted and tested to evaluate the changes in fracture toughness properties of the vessel as a function neutron fluence. The surveillance testing results of test campaigns performed until 2009 were already published by N. V. Luzginova et. al. [1]. The current paper presents results from the two recent surveillance campaigns performed in 2014 and 2015. The fracture toughness and tensile testing results are reported. Changes in mechanical properties of Al 5154-O alloy with an increase in neutron fluence are discussed in correlation with the irradiation damage microstructure observed in TEM and the fracture morphology observed in SEM. The HFR surveillance testing results are compared to the historically published results on irradiated aluminum alloys and conclusions about the evolution of embrittlement trends in relation with irradiation induced damage mechanisms in HFR vessel are drawn at the end.
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Anthony Xavior, M., Prashantha Kumar Hosamane, and Jeyapandiarajan Paulchamy. "Anisotropic Behavior of Aluminum Alloy 2024-Graphene Composites at Varying Strain Rates." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70087.

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In fabrication of high strength materials coupled with improved mechanical properties; focus on integration of multifunctional reinforcements are increasing along with novel processing methods. Single layer 2-D material Graphene are among one such novel material with huge aspect ratio, posse’s high strength. But the real challenge is processing and incorporation of these reinforcements with appropriate content in metals or its alloys matrix. Current research work focus to study the anisotropic behavior on addition of pristine Graphene/MWCNT and processing methods like ball milling under constant ball to powder precursor ratio (BPR) of AA 2024 nanocomposites. The extent change in aspect ratio, size of the nanoparticle mixtures during ball milling were analyzed under SEM and Raman spectroscopy. Thus obtained (ball milled) precursors are consolidated through vacuum hot press and hot extruded to get typical flat specimen at optimized processing parameters. XRD analysis, relative density and hardness measurement is done on extruded composites. Thus developed composites are subjected to study the anisotropic behavior at various orientations and strain rates (0.5, 1.0, 1.5 mm/min) using uniaxial tensile testing instrument and corresponding stress strains graphs were obtained. The fracture surfaces were characterized by scanning electron microscope (SEM) and its shows the nucleation of the dimple size are varies with increasing the strain rate and also deeper dimple size were noticed. Negative strain sensitivity were observed for the lower strain rate (0.1 and 0.3 mm/min) and positive strain sensitivity for higher strain rates. Microstructural anisotropy infers that AA2024-Graphene/MWCNT composites are sensitive to strain rate and shear type of failure is observed on increasing the strain rate.
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Reports on the topic "Aluminum alloys Fracture Testing"

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deWit, Roland, Richard J. Fields, Samuel R. III Low, Donald E. Harne, and Tim Foecke. Fracture testing of large-scale thin-sheet aluminum alloy. Gaithersburg, MD: National Institute of Standards and Technology, 1995. http://dx.doi.org/10.6028/nist.ir.5661.

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Author, Not Given. Baseline Fracture Toughness and SCC Testing of Alloys X750 and XM-19. Office of Scientific and Technical Information (OSTI), February 2012. http://dx.doi.org/10.2172/1035808.

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D. Schwam: J.F. Wallace: Y. Zhu: J.W. Ki. Metallic Reinforcement of Direct Squeeze Die Casting Aluminum Alloys for Improved Strength and Fracture Resistance. Office of Scientific and Technical Information (OSTI), October 2004. http://dx.doi.org/10.2172/882786.

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Starke, Edgar A., and Jr. Investigation of the Role of Trace Additions of Precipitation, Deformation and Fracture on Aluminum Alloys. Fort Belvoir, VA: Defense Technical Information Center, May 2001. http://dx.doi.org/10.21236/ada389780.

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J. H. Jackson and S. P. Teysseyre. Baseline Fracture Toughness and CGR testing of alloys X-750 and XM-19 (EPRI Phase I). Office of Scientific and Technical Information (OSTI), October 2012. http://dx.doi.org/10.2172/1060986.

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J. H. Jackson and S. P. Teysseyre. Baseline Fracture Toughness and CGR testing of alloys X-750 and XM-19 (EPRI Phase I). Office of Scientific and Technical Information (OSTI), February 2012. http://dx.doi.org/10.2172/1036263.

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Tirpak, J. D. Constant-Load-Amplitude Fatigue Crack Growth Testing of Cast Aluminum Alloys A201-T7 and A357-T6. Fort Belvoir, VA: Defense Technical Information Center, November 1985. http://dx.doi.org/10.21236/ada163494.

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Bierwagen, Gordon P., Dennis E. Tallman, Stuart Croll, Philip Boudjouk, and Victoria J. Gelling. Corrosion Protection of Aluminum Alloys Used in Aircraft - Testing, Analysis and Development of Environmentally Compliant Coatings and Pretreatments for the Corrosion Protection of Aircraft Alloys. Fort Belvoir, VA: Defense Technical Information Center, September 2002. http://dx.doi.org/10.21236/ada417676.

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