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Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "AA2195"

1

Lee, Ho Sung, Koo Kil No, Joon Tae Yoo, and Jong Hoon Yoon. "A Study on Friction Stir Welding Process for AA2219/AA2195 Joints." Key Engineering Materials 762 (February 2018): 339–42. http://dx.doi.org/10.4028/www.scientific.net/kem.762.339.

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The object of this study was to study mechanical properties of friction stir welded joints of AA2219 and AA2195. AA2219 has been used as an aerospace materials for many years primarily due to its high weldability and high specific strength in addition to the excellent cryogenic property so to be successfully used for manufacturing of cryogenic fuel tank for space launcher. Relatively new Aluminum-Lithium alloy, AA2195 provides significant saving on weight and manufacturing cost with application of friction stir welding. Friction stir welding is a solid-state joining process, which use a spinning tool to produce frictional heat in the work piece. To investigate the effect of the rotation direction of the tool, the joining was performed by switching the positions of the two dissimilar alloys. The welding parameters include the travelling speed, rotation speed and rotation direction of the tool, and the experiment was conducted under the condition that the travelling speed of the tool was 120-300 mm/min and the rotation speed of the tool was 400-800 rpm. Tensile tests were conducted to study the strength of friction stir welded joints and microhardness were measured with microstructural analysis. The results indicate the failure occurred in the relatively weaker TMAZ/HAZ interface of AA2219. The optimum process condition was obtained at the rotation speed of 600-800 rpm and the travelling speed of 180-240 mm/min.
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2

Agilan, M., R. Anbukkarasi, T. Venkateswran, Paul G. Panicker, Sathish V. Kailas, D. Sivakumar, and Bhanu Pant. "Studies on Friction Stir Welding of Al-Cu-Li (AA2195) Alloy." Materials Science Forum 830-831 (September 2015): 274–77. http://dx.doi.org/10.4028/www.scientific.net/msf.830-831.274.

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For aerospace applications, Al-Cu-Li alloys are more attractive than conventional aluminum alloys due to their low density, high modulus and high strength. AA2195 is a third generation Al-Li alloy, developed with improved weldability. In this study, AA2195 alloy of 5mm thick sheets were welded by friction stir welding process (FSW). Tool rotational speed was varied from 400 rpm to 1000 rpm at constant travel speed of 60mm/min. Optimum tool rotation speed was identified and defect free weld coupons were processed with optimized parameter. Mechanical properties and micro structural characterization have been conducted on FSW welds.
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3

Nayan, Niraj, S. V. S. Narayana Murty, S. C. Sharma, K. Sreekumar, and Parameshwar Prasad Sinha. "Optimization of Homogenization Parameters of Al-Cu-Li Alloy Cast Ingots Using Calorimetry and Metallographic Techniques." Materials Science Forum 710 (January 2012): 557–62. http://dx.doi.org/10.4028/www.scientific.net/msf.710.557.

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In the present study, thermal treatments for homogenizing cast structures of Al-Cu-Li alloy AA2195 for improved workability are developed chiefly by empirical methods and detailed Differential Scanning Calorimetry (DSC) and microstructural characterization. DSC has been carried out on as-cast samples to establish the homogenization temperatures and avoid incipient melting. Homogenization time has been calculated empirically and microstructural characterization and DSC has been carriedout to after each cycle to validate the empirically established homogenization cycle. Homogenization cycle (435°C/8hrs+495°C/12hrs+525°C/32hrs) has been established for AA2195 alloy having an average grain size of 500μm based on calorimetric studies and microstructural examination.
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4

Lee, Ye Rim, Hyun Ho Jung, Jong Hoon Yoon, Joon Tae Yoo, Kyung Ju Min, and Ho Sung Lee. "A Study on Mechanical Properties of Friction Stir Welded and Electron Beam Welded AA2195 Sheets." Advanced Materials Research 1105 (May 2015): 178–81. http://dx.doi.org/10.4028/www.scientific.net/amr.1105.178.

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Aluminum-Copper-Lithium alloys are used as substitute for conventional aerospace Al alloys in cryogenic tank of liquid rocket engines, aircraft wing box and satellite systems due to their high specific modulus and specific strength. For this reason they are currently under consideration for one of the potential choices for a large structure of Korea Space Launch Vehicle. In this study, friction stir welding and electron beam welding were conducted on AA2195 sheets, in butt joint configuration in order to compare the two processes and to evaluate mechanical properties. The results provide valuable information for the optimal condition of joining AA2195 sheets for a large tankage structure of the space launcher.
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No, Kookil, Joon-Tae Yoo, Jong-Hoon Yoon, and Ho-Sung Lee. "Effect of Process Parameters on Friction Stir Welds on AA2219-AA2195 Dissimilar Aluminum Alloys." Korean Journal of Materials Research 27, no. 6 (June 30, 2017): 331–38. http://dx.doi.org/10.3740/mrsk.2017.27.6.331.

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6

Xie, Yuming, Xiangchen Meng, Feifan Wang, Yimeng Jiang, Xiaotian Ma, Long Wan, and Yongxian Huang. "Insight on corrosion behavior of friction stir welded AA2219/AA2195 joints in astronautical engineering." Corrosion Science 192 (November 2021): 109800. http://dx.doi.org/10.1016/j.corsci.2021.109800.

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7

Elgallad, E. M., J. Lai, and X.-G. Chen. "Precipitation hardening of AA2195 DC cast alloy." Canadian Metallurgical Quarterly 53, no. 4 (July 13, 2014): 494–502. http://dx.doi.org/10.1179/1879139514y.0000000149.

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8

Crooks, R., Z. Wang, V. I. Levit, and R. N. Shenoy. "Microtexture, micro structure and plastic anisotropy of AA2195." Materials Science and Engineering: A 257, no. 1 (November 1998): 145–52. http://dx.doi.org/10.1016/s0921-5093(98)00833-8.

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9

Kim, Jae-Hee, Jeong-Hoon Jeun, Hyun-Jin Chun, Ye Rim Lee, Joon-Tae Yoo, Jong-Hoon Yoon, and Ho-Sung Lee. "Effect of precipitates on mechanical properties of AA2195." Journal of Alloys and Compounds 669 (June 2016): 187–98. http://dx.doi.org/10.1016/j.jallcom.2016.01.229.

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10

Nayan, Niraj, S. V. S. Narayana Murty, S. C. Sharma, K. Sreekumar, and P. P. Sinha. "Processing and Characterization of Al-Cu-Li Alloy AA2195." Materials Science Forum 710 (January 2012): 119–24. http://dx.doi.org/10.4028/www.scientific.net/msf.710.119.

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The objective of the present study was to melt and cast AA2195 alloy in Vacuum Induction Melting (VIM) under dynamic inert atmosphere. These billets were homogenized and subsequently hot forged and rolled to sheets. The products in the form of sheets were subjected to T8 (Solution Treatment +WQ+CW+Aging) temper condition. Mechanical properties were evaluated at room temperature and correlated with microstructure. Highest mechanical properties obtained in T87 temper have been reported.
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Дисертації з теми "AA2195"

1

Seibert, Judith [Verfasser], and Ferdinand [Akademischer Betreuer] Haider. "Nukleationsmechanismen der T1-Phase in der Aluminiumlegierung AA2195 / Judith Seibert ; Betreuer: Ferdinand Haider." Augsburg : Universität Augsburg, 2021. http://nbn-resolving.de/urn:nbn:de:bvb:384-opus4-890230.

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2

Qian, Daishu. "Microstructure and corrosion performance of excimer laser-melted AA2124-T4 aluminium alloy and SiCp/AA2124-T4 composite." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/microstructure-and-corrosion-performance-of-excimer-lasermelted-aa2124t4-aluminium-alloy-and-sicpaa2124t4-composite(705f8af9-2a7c-4188-91e4-fcf33d8f76f0).html.

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The present work studies the microstructure and corrosion behaviour of 25 vol.% SiCp/AA2124-T4 metal matrix composites (MMCs) and AA2124-T4 aluminium alloy; and also the capability of excimer laser surface melting (LSM) to improve the corrosion resistance of the SiCp/AA2124 MMC and the monolithic alloy (MA). Microstructural characterization has shown significant influence of the presence and size of SiC particles on the fine Al2Cu precipitate and Mg segregation at SiC/Al interfacial regions. Such precipitates are revealed to be active sites for corrosion initiation in the MMCs, while the preferential sites for corrosion initiation in the MA are the coarse intermetallics. Corrosion evaluation performed in a 0.6 M NaCl solution suggests that the corrosion resistance of the MMC reinforced with micrometre-sized SiC particles is inferior to that of the MA and the MMC reinforced with submicrometre-sized SiC particles. The submicrometre-sized SiC particles have little adverse effect on the corrosion resistance of the MMC due to the reduced interfacial precipitates. Thin films of up to several micrometres have been achieved by excimer LSM on both the MMC and the MA. The surface roughness and the thickness of the melted layer increase with increasing laser fluence. High number of pulses (40 P) results in significant porosity in the MA and networks of cracking in the MMC. A homogeneous layer without chemical segregation except the Cu-rich segregation bands has been obtained on the MA; while complex microstructures are observed for the MMC, including the Cu-rich segregation bands, Al-Si eutectic structure and microsegregation-free structure laid in sequence from the bottom of the melted layer to the top surface. The modelling work suggest that the presence of SiC particles gives rise in high temperatures in the melt pool, which is useful to explain the materials responses upon laser irradiation, such as decomposition of SiC, evaporation of matrix alloy, and oxides formation. The fast cooling rate up to 1011 K/s is responsible for the formation of microsegregation-free structure. Corrosion evaluation has indicated improvement of corrosion resistance of the MMC and the MA after excimer LSM due to the reduction of the intermetallics. For the laser-melted MA, the corrosion behaviour is governed by the surface morphology and the porosity. The significant rippled structure obtained under high laser fluence could lead to crevice corrosion in the valley between the ripples whilst the pores could provide penetrating routes for the chloride solution to reach the Cu-rich segregation bands, leading to the delamination of the melted layer. For the laser-melted MMC, corrosion mainly initiated at the SiC remnants, which are rich in Si. The corrosion sites of the laser-melted MMC are in the form of small cracked blisters.
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3

Jurak, Sarah F. "Statistical analysis of the mechanical properties of Friction Stir Welded AA2024 and AA2198 aluminum alloys." Thesis, Wichita State University, 2011. http://hdl.handle.net/10057/5181.

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This thesis presents an analysis of data based on the results of a previous study into the path independence of friction stir welding (FSW). The original study was conducted in two phases using AA2024 and AA2198 aluminum alloy material. In Phase I, welds were made with six different tool designs, and tensile data was entered into Statgraphics® software as part of a design of experiments (DOE) approach for the purpose of optimizing the weld parameter process windows for each tool design. Phase II included a round robin study where welds were produced at four sites to evaluate site-to-site variability. In the present study, testing of the welds included additional tensile testing, full-field microhardness testing, and conductivity testing of the welds produced in the prior two phases of the program. The welds were inspected for defects, and the method of failure on the tensile specimens is discussed. Tensile data was evaluated statistically using Statgraphics® software. Previously, as part of Phase I, that data was evaluated using the techniques of chapter nine of the Metallic Materials Properties Development and Standardization (MMPDS), and design allowables were calculated at that time. In the present study, Phase II data was compared using the design allowables from Phase I. Variability was not found to be significant when evaluated according to location of the tensile coupon along the weld joint line or as a function of weld parameters in the process window. Although site-to-site variability was significant, it was low, with the highest variation for each material being 2 to 5.5 ksi. No significant outliers were identified. There is evidence that the friction stir welding process is path-independent and that a defect-free weld is uniform in tensile strength from beginning to end. There is also evidence that a DOE approach can be used to optimize the weld parameter process window for any tool in order to identify a range of weld parameters where a defect-free weld can be produced.
Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Mechanical Engineering.
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4

Tsivoulas, Dimitrios. "Effects of combined Zr and Mn additions on the microstructure and properties of AA2198 sheet." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/effects-of-combined-zr-and-mn-additions-on-the-microstructure-and-properties-of-aa2198-sheet(6bb2c9db-7584-464b-8064-bab0cc2d397c).html.

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The effect of individual and combined zirconium and manganese additions have been compared for an AA2198 6 mm thick sheet in T351 temper regarding their influence primarily on recrystallisation resistance and secondly on fracture toughness and overageing resistance. A complete characterisation of the dispersoid distributions was carried out for a deeper understanding of the effects of the Al3Zr and Al20Cu2Mn3 particles, involving studying their formation from the as-cast and homogenised stage.The most important finding in this work was the lower recrystallisation resistance in the alloy containing 0.1 wt%Zr + 0.3 wt%Mn compared to that containing only 0.1 wt%Zr. This result was rather unexpected, if one considers the opposite microsegregation patterns of Zr and Mn during casting, which leads to dispersoids occupying the majority of the grains’ volume and minimising dispersoid-free zones that could be potential sites for nucleation of recrystallisation. The other two alloys with dispersoid additions 0.05 wt%Zr + 0.3 wt%Mn and 0.4 wt%Mn, were partially and fully recrystallised respectively in the rolled T351 condition.Equally important in this work, was the observation that the opposite microsegregation trend of Zr and Mn sufficed to restrict grain growth in unrecrystallised areas. The 0.1Zr-0.3Mn alloy exhibited the lowest grain size of all alloys, both in the T351 temper and after annealing at 535oC for up to 144 hours. The reason for this was the combined action of Al20Cu2Mn3 dispersoids and Mn solute in the regions where the Zr concentration was low (i.e. near the grain boundaries), which offered additional pinning pressure to those areas compared to the 0.1Zr alloy.The lower recrystallisation resistance of the 0.1Zr-0.3Mn alloy was explained on the grounds of two main factors. The first was the lower subgrain size and hence stored energy within bands of Al20Cu2Mn3 dispersoids, which increased the driving force for recrystallisation in these regions. The second was the interaction between Zr and Mn that led to a decrease in the Al3Zr number density and pinning pressure. Since Zr was the dominant dispersoid family in terms of inhibiting recrystallisation, inevitably this alloy became more prone to recrystallisation. The Al3Zr pinning pressure was found to be much lower especially within bands of Al20Cu2Mn3 dispersoids. The detrimental effect of the Mn addition on the Al3Zr distribution was proven not to result from the dissolution of Zr within Mn-containing phases, and several other phases, at the grain interior and also in grain boundaries. The observed effect could not be precisely explained at this stage.Concerning mechanical properties, the 0.1Zr alloy exhibited the best combination of properties in the Kahn tear tests for fracture toughness. Further, it had a higher overageing resistance compared to the 0.1Zr-0.3Mn alloy.As an overall conclusion from this work, considering all the studied properties here that are essential for damage tolerant applications, the addition of 0.1 wt%Zr to the AA2198 6 mm thick sheet was found to be superior to that of the combined addition of 0.1 wt%Zr + 0.3 wt%Mn.
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Moroz, Ivan. "Soldagem por fricção e mistura da liga de alumínio AA2198-T851 em chapas de diferentes espessuras." Universidade Federal de São Carlos, 2012. https://repositorio.ufscar.br/handle/ufscar/918.

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Анотація:
Made available in DSpace on 2016-06-02T19:12:34Z (GMT). No. of bitstreams: 1 5750.pdf: 4745650 bytes, checksum: 4b6b08d2fe2cf1441f9187da403d2f87 (MD5) Previous issue date: 2012-12-11
Universidade Federal de Sao Carlos
Friction Stir Welding (FSW) process, conceived in 1991, has been the target of research in the last decades due to the excellent properties presented by its welded joints, favored by the fact of occurrence in the solid state, and easiness of application, enabling several weld geometries. In particular, metal alloys with low melting points, in which conventional methods of welding (based in fusion) are hard to apply, have been benefited by this method, with large application in automobilist and aerospace industrial sectors. These branches enterprises are interested in determining the set of parameters that will yield the best mechanical properties, before utilizing FSW in commercial scale. With this objective in mind, this work aimed at optimizing the FSW parameters in the Aluminum Alloy 2198-T851, considering geometry of plates of different thicknesses (tailor welded blanks configuration). Due to the asymmetric characteristic of the welded joints, welding parameters related to positioning of the welding tool (welding angles and pin offset) were varied, in two groups of plates of different thicknesses: 4.2-3.5 milimeters, and 4.2-2.5 milimeters. Results obtained from macro and microstructural characterization (optical microscopy), tension tests and microhardness analyses were considered as criteria for determining the best quality welds. After the analysis of these results and correlation with related literature, it was concluded that the proposed variation in welding parameters affects the flux of material in the welded joint, possibly leading to formation of defects, causing a detrimental effect on the mechanical properties. Nevertheless, welds with mechanical properties equal to or superior to the base metal were obtained (except for elongation values), especially in relation to yield stress values, of capital importance in industrial sectors associated with high security demands, such as automobilist and aerospace.
O processo de soldagem por fricção e mistura (FSW), concebido em 1991, tem sido alvo de pesquisas nas últimas décadas em função das boas propriedades apresentadas em suas juntas, favorecidas pelo fato do processo ocorrer no estado sólido, e em função da facilidade de aplicação, possibilitando diversas geometrias de solda. Em especial, ligas metálicas com baixo ponto de fusão, de difícil soldabilidade por métodos convencionais (baseados em fusão) têm sido beneficiadas por este método, com larga aplicação nos setores industriais automobilístico e aeroespacial. Interessa, às indústrias destes ramos, a determinação dos conjuntos de parâmetros que resultarão nas melhores propriedades mecânicas possíveis, anteriormente à utilização comercial de larga escala deste novo processo. Com este objetivo foi realizada a otimização dos parâmetros de soldagem por FSW em liga de alumínio 2198-T851, aplicada em configuração de chapas de diferentes espessuras (tailor welded blanks). Devido à característica assimétrica da junta soldada, variaram-se os parâmetros de soldagem relacionados ao posicionamento da ferramenta (ângulos de soldagem e deslocamento transversal do pino), em dois conjuntos de chapas de diferentes espessuras: 4,2-3,5 mm, e 4,2-2,5 mm. Como critérios para determinação da solda de melhor qualidade foram considerados os resultados obtidos de caracterização macro e microestrutural (microscopia ótica), ensaios de tração e de microdureza. Após análise dos resultados e correlação com a literatura, concluiu-se que a variação dos parâmetros de soldagem considerados afeta o fluxo de material na junta soldada, podendo levar à formação de defeitos, causando efeito detrimental sobre as propriedades mecânicas das soldas. Obtiveram-se, também, soldas com desempenho mecânico igual ou superior ao do metal base (com exceção do alongamento total na ruptura), sobretudo em relação a valores de tensão de escoamento, cuja importância é significativa em setores com alta exigência de segurança, como são o automobilístico e o aeroespacial.
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Santos, Vivian Priscila de Oliveira. "Avaliação da liga AA2198 para aplicação em revestimentos de fuselagem: propriedades mecânicas e aspectos de conformação." Instituto Tecnológico de Aeronáutica, 2007. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=1036.

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A busca por uma plataforma mais eficiente ée uma importante estratégia na manutenção da competitividade na indústria aeronáutica. Mais especificamente na aviação comercial, a busca por estruturas mais leves, resistentes e de fácil manutenção ée a tradução desta eficiência desejada. Neste cenário, novos materiais com propriedades cada vez mais otimizadas desempenham um papel fundamental. As ligas de alumínio contendo lítio surgiram há algumas décadas; porém, ainda hoje, sua aplicação ée restrita. Com uma superioridade marcante em alguns aspectos em relação às ligas de alumínio convencionais mais utilizadas atualmente, esta classe de ligas apresenta algumas particularidades, por exemplo, custo, gestão das sobras e algumas propriedades específicas, que truncaram seu uso extensivo na indústria aeronáutica. Foram necessárias décadas de aperfeiçoamento na composição de elementos de liga e tratamentos térmicos e termomecânicos para que hoje estivessem disponíveis algumas ligas da chamada terceira geração, nas quais muitos destes problemas foram mitigados. Ainda assim, são grandes os desafios para a introdução desta classe de ligas em uma aeronave, desde a fase de projeto atée a estratégia de mercado para a compra e gestão de peças de reposição. Dentro deste contexto, o presente trabalho avaliou a aplicação da liga AA2198 de alumínio-lítio da terceira geração para aplicação em revestimentos de fuselagem de aeronaves, em substituição à liga AA2024. Foram considerados aspectos de projeto, avaliadas as propriedades mecânicas e realizadas operações de conformação plástica por estiramento utilizando-se chapas de 1,6 mm de espessura, concluindo-se que, nestes aspectos, a liga AA2198 pode substituir com vantagens a liga AA2024 devido a um conjunto superior de propriedades mecânicas e um comportamento similar em condições de processamento para obtenção de peças conformadas.
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Poudel, Amir. "Dissimilar Joining of Al (AA2139) – Mg (WE43) Alloys Using Friction Stir Welding." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc955064/.

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Анотація:
This research demonstrates the use of friction stir welding (FSW) to join dissimilar (Al-Mg) metal alloys. The main challenges in joining different, dissimilar metal alloys is the formation of brittle intermetallic compounds (IMCs) in the stir zone affecting mechanical properties of joint significantly. In this present study, FSW joining process is used to join aluminum alloy AA2139 and magnesium alloy WE43. The 9.5 mm thick plates of AA2139 and WE43 were friction stir butt welded. Different processing parameters were used to optimize processing parameters. Also, various weldings showed a crack at interface due to formation of IMCs caused by liquation during FSW. A good strength sound weld was obtained using processing parameter of 1200 rev/min rotational speed; 76.2 mm/min traverse speed; 1.5 degree tilt and 0.13 mm offsets towards aluminum. The crack faded away as the tool was offset towards advancing side aluminum. Mostly, the research was focused on developing high strength joint through microstructural control to reduce IMCs thickness in Al-Mg dissimilar weld joint with optimized processing parameter and appropriate tool offset.
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8

Klages, Holli K. "The "Lazy S" feature in Friction Stir Welding of AA2099 Aluminum-Lithium alloy." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Dec%5FKlages.pdf.

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Анотація:
Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, December 2007.
Thesis Advisor(s): McNelley, Terry. "December 2007." Description based on title screen as viewed on January 22, 2008. Includes bibliographical references (p.45). Also available in print.
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9

Padgett, Barbara Nicole. "Investigation into the stress corrosion cracking properties of AA2099, an Al-Li-Cu alloy." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1204515486.

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Knox, Sara Nicole. "Corrosion Behavior and Coating Protection of Aluminum-Lithium-CopperAlloys 2099-T3 and 2060-T8E30." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1449153599.

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Частини книг з теми "AA2195"

1

Elgallad, E. M., A. Hekmat-Ardakan, F. Ajersch, and X.-G. Chen. "Microstructure and Mechanical Properties of AA2195 DC Cast Ingot Plates." In ICAA13: 13th International Conference on Aluminum Alloys, 1864–71. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118495292.ch279.

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Elgallad, E. M., A. Hekmat-Ardakan, F. Ajersch, and X.-G. Chen. "Microstructure and Mechanical Properties of AA2195 DC Cast Ingot Plates." In ICAA13 Pittsburgh, 1865–71. Cham: Springer International Publishing, 2012. http://dx.doi.org/10.1007/978-3-319-48761-8_279.

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3

Tan, Engin, Yavuz Kaplan, Hakan Ada, and Sinan Aksöz. "Production of the AA2196-TiB2 MMCs via PM Technology." In Light Metals 2019, 153–57. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05864-7_21.

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4

Ghazaly, A., B. Seif, and H. G. Salem. "Mechanical and Tribological Properties of AA2124-Graphene Self Lubricating Nanocomposite." In Light Metals 2013, 411–15. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118663189.ch71.

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5

Ghazaly, A., B. Seif, and H. G. Salem. "Mechanical and Tribological Properties of AA2124-Graphene Self Lubricating Nanocomposite." In Light Metals 2013, 411–15. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-65136-1_71.

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6

Bouchaâla, Kenza, Mohamad Fathi Ghanameh, Mustapha Faqir, Mohamad Mada, and Elhachmi Essadiqi. "Investigation of Contact Impact in Deep Drawing for AA2198 Al-Li Sheet Using ABAQUS/Explicit." In Advances in Intelligent Systems and Computing, 411–20. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-36671-1_36.

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7

Trishul, M. A., and Bijayani Panda. "A Review on the Challenges in Welding of Aluminium AA2219 Alloy." In Advances in Lightweight Materials and Structures, 663–71. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7827-4_68.

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8

Odoh, Daniel O., Gbadebo M. Owolabi, and Akindele G. Odeshi. "Dynamic Deformation Behavior of AA2099-T8 Under Compression and Torsion Loads." In Dynamic Behavior of Materials, Volume 1, 1–12. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00771-7_1.

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9

Turchyn, I., I. Pasternak, L. Sniezek, I. Szachogluchowicz, V. Hutsaylyuk, and H. Sulym. "Modeling of Selected Physical Phenomena Under Explosion Welding the Laminate AA2519-Ti6Al4V." In Algorithms as a Basis of Modern Applied Mathematics, 305–35. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61334-1_16.

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10

Jayamani, Krishnajith, K. Abhishekaran, R. Vasudevan, H. M. Umer, and A. K. Asraff. "Finite Element Simulation of Residual Stresses in Friction Stir Welding of AA2219 Plates." In Lecture Notes in Mechanical Engineering, 435–43. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8724-2_39.

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Тези доповідей конференцій з теми "AA2195"

1

Lee, Ho-Sung, Jong-Hoon Yoon, Joon-Tae Yoo, and Kyung-Ju Min. "Characterization of Superplastic Behavior of AA2195 by Bulging Test." In International Symposium on Mechanical Engineering and Material Science (ismems-16). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/ismems-16.2016.1.

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2

Toursangsaraki, Maziar, Yongxiang Hu, and Jiancheng Jiang. "Experimental investigation of laser peening effects on tensile properties of AA2195-T6 friction stir welded joints." In Advanced Laser Processing and Manufacturing V, edited by Yuji Sano, Minghui Hong, Rongshi Xiao, and Jianhua Yao. SPIE, 2021. http://dx.doi.org/10.1117/12.2599515.

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3

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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Анотація:
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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4

Olasumboye, Adewale, Gbadebo Owolabi, Olufemi Koya, Horace Whitworth, and Nadir Yilmaz. "Comparative Study of the Dynamic Behavior of AA2519 Aluminum Alloy in T6 and T8 Temper Conditions." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10978.

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Анотація:
Abstract This study investigates the dynamic response of AA2519 aluminum alloy in T6 temper condition during plastic deformation at high strain rates. The aim was to determine how the T6 temper condition affects the flow stress response, strength properties and microstructural morphologies of the alloy when impacted under compression at high strain rates. The specimens (with aspect ratio, L/D = 0.8) of the as-cast alloy used were received in the T8 temper condition and further heat-treated to the T6 temper condition based on the standard ASTM temper designation procedures. Split-Hopkinson pressure bar experiment was used to generate true stress-strain data for the alloy in the range of 1000–3500 /s strain rates while high-speed cameras were used to monitor the test compliance with strain-rate constancy measures. The microstructures of the as received and deformed specimens were assessed and compared for possible disparities in their initial microstructures and post-deformation changes, respectively, using optical microscopy. Results showed no clear evidence of strain-rate dependency in the dynamic yield strength behavior of T6-temper designated alloy while exhibiting a negative trend in its flow stress response. On the contrary, AA2519-T8 showed marginal but positive response in both yield strength and flow behavior for the range of strain rates tested. Post-deformation photomicrographs show clear disparities in the alloys’ initial microstructures in terms of the second-phase particle size differences, population density and, distribution; and in the morphological changes which occurred in the microstructures of the different materials during large plastic deformation. AA2519-T6 showed a higher susceptibility to adiabatic shear localization than AA2519-T8, with deformed and bifurcating transformed band occurring at 3000 /s followed by failure at 3500 /s.
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5

Dewan, Mohammad W., Muhammad A. Wahab, and Khurshida Sharmin. "Effects of Post Weld Heat Treatments (PWHT) on Friction Stir Welded AA2219-T87 Joints." In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-3021.

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Анотація:
Friction Stir Welding (FSW) offers significantly better performance on aluminum alloy joints compared to the conventional fusion arc welding techniques; however, plastic deformation, visco-plastic flow of metals, and complex non-uniform heating cycles during FSW processes, result in dissolution of alloying elements, intrinsic microstructural changes, and post-weld residual stress development. As a consequence, about 30% reduction in ultimate strength (UTS) and 60% reduction in yield strength (YS) were observed in defect-free, as-welded AA2219-T87 joints. PWHT is a common practice to refine grain-coarsened microstructures which removes or redistributes post-weld residual stresses; and improves mechanical properties of heat-treatable welded aluminum alloys by precipitation hardening. An extensive experimental program was undertaken on PWHT of FS-welded AA2219-T87 to obtain optimum PWHT conditions and improvement of the tensile properties. Artificial age-hardening (AH) helped in the precipitation of supersaturated alloying elements produced around weld nugget area during the welding process. As a result, an average 20% improvement in YS and 5% improvements in UTS was observed in age-hardened (AH-170°C-18h) specimens as compared to AW specimens. To achieve full benefit of PWHT, solution-treatment followed by age-hardening (STAH) was performed on FS-welded AA2219-T87 specimens. Solution-treatment (ST) helps in the grain refinement and formation of supersaturated precipitates in aluminum alloys. Age-hardening of ST specimens help in the precipitation of alloying elements around grain boundaries and strengthen the specimens. Optimum aging period is important to achieve better mechanical properties. For FS-welded AA2219-T87 peak aging time was 5 hours at 170°C. STAH-170°C -5h treated specimens showed about 78% JE based on UTS, 61% JE based on yield strength, and 36% JE based on tensile toughness values of base metal.
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6

Dhas, J. Edwin Raja, K. Anton Savio Lewise, and M. Satyanarayana Gupta. "Wear characterization of AA2219 titanium carbide reinforced composites." In PROCEEDINGS OF THE 1ST INTERNATIONAL CONFERENCE ON FRONTIER OF DIGITAL TECHNOLOGY TOWARDS A SUSTAINABLE SOCIETY. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0113707.

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7

Yuvaraj, G., V. Bhuvaneswari, G. Vignesh, and L. Vairamuthu. "Mechanical properties of aluminium alloy AA2219 reinforced with graphite." In 2017 First International Conference on Recent Advances in Aerospace Engineering (ICRAAE). IEEE, 2017. http://dx.doi.org/10.1109/icraae.2017.8297214.

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8

Rajesh kumar, L., A. Saravanakumar, V. Bhuvaneswari, M. P. Jithin karunan, N. Karthick Raja, and P. Karthi. "Tribological behaviour of AA2219/MOS2 metal matrix composites under lubrication." In 1ST INTERNATIONAL CONFERENCE ON SUSTAINABLE MANUFACTURING, MATERIALS AND TECHNOLOGIES. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000042.

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9

Lee, Ho-Sung, Jong-Hoon Yoon, Joon-Tae Yoo, and Kyung-Ju Min. "A Study on Microstructure of AA2219 Friction Stir Welded Joint." In International Symposium on Mechanical Engineering and Material Science (ismems-16). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/ismems-16.2016.2.

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10

Xu, Luopeng, Xiaojian Cao, Yu Chen, and Qingyuan Wang. "Al-Li alloy AA2198's very high cycle fatigue crack initiation mechanism and its fatigue thermal effect." In Applied Optics and Photonics China (AOPC2015), edited by Sen Han, Jonathan D. Ellis, Junpeng Guo, and Yongcai Guo. SPIE, 2015. http://dx.doi.org/10.1117/12.2202283.

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