Influence of surface enhanced treatment on microstructure and fatigue performance of 6005A aluminum alloy welded joint

Wang Hongxuan; Zhang Jiayi; Wang Bin; Ma Mingyang; Yi Danqing

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Influence of surface enhanced treatment on microstructure and fatigue performance of 6005A aluminum alloy welded joint

机译：表面增强处理对6005A铝合金焊接接头微观结构和疲劳性能的影响

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The application of 6005A aluminum alloy in transportation is increasing, which puts forward higher requirements for the fatigue performance of welding process. In this study, friction stir welding (FSW) enhanced treatment was applied on the traditional metal inert gas (MIG) weld. The results show that the fatigue life of FSW plate is three times higher than that of original MIG welded plate at 140 MPa stress level. Under 107 cycles, the fatigue life limit was increased by 16 MPa compared with as-received MIG plate. The main reason of FSW leading to the increasing fatigue life are the reduction of porosity to reduce crack initiation and grain refinement to delay crack propagation.

机译：6005A铝合金在运输中的应用增加，这对焊接过程的疲劳性能提出了更高的要求。在该研究中，对传统金属惰性气体（MIG）焊接进行了摩擦搅拌焊接（FSW）增强处理。结果表明，FSW板的疲劳寿命高于140MPa应力水平的原始MIG焊接板的疲劳寿命。在107个循环下，与接收的MIG板相比，疲劳寿命限制增加了16MPa。 FSW导致疲劳寿命越来越大的主要原因是降低孔隙率，以减少裂纹启动和晶粒细化以延迟裂纹繁殖。

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来源
《Journal of Manufacturing Processes》 |2020年第12期|563-572|共10页
作者
Wang Hongxuan; Zhang Jiayi; Wang Bin; Ma Mingyang; Yi Danqing;
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作者单位

Cent South Univ Sch Mat Sci & Engn Changsha 410083 Peoples R China;

Cent South Univ Sch Mat Sci & Engn Changsha 410083 Peoples R China|Southwest Jiaotong Univ Sch Mech Engn Chengdu 610031 Peoples R China;

Cent South Univ Sch Mat Sci & Engn Changsha 410083 Peoples R China;

Cent South Univ Sch Mat Sci & Engn Changsha 410083 Peoples R China;

Cent South Univ Sch Mat Sci & Engn Changsha 410083 Peoples R China;

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原文格式 PDF
正文语种 eng
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关键词
fatigue; strength; friction stir welding processing; metal inert gas welding; 6005A aluminium alloy;

机译：疲劳;强度;摩擦搅拌焊接加工;金属惰性气体焊接;6005A铝合金;

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机译：焊后热处理对6013 T4铝合金TIG焊疲劳疲劳裂纹扩展行为的影响（第1部分。焊接金属的疲劳裂纹扩展）
2. Influences of post weld heat treatment on fatigue crack growth behavior of TIG welding of 6013 T4 aluminum alloy joint (Part 1. Fatigue crack growth across the weld metal) [J] . Gunawan Dwi Haryadi, Seon Jin Kim Journal of Mechanical Science and Technology . 2011,第9期

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4. Microstructures and Mechanical Properties of Butt Joint of A356/6005A Dissimilar Aluminum Alloy by Pulse MIG Welding [C] . Guangshan Hu, Yun Cheng, Mingzhu Zhang, China SAE congress . 2020

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5. Characterization of mechanical properties and study of microstructures of friction stir welded joints fabricated from similar and dissimilar alloys of aluminum. [D] . Akula, Deepa Reddy. 2007

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6. The Influence of Post-Weld Heat Treatment on the Microstructure and Fatigue Properties of Sc-Modified AA2519 Friction Stir-Welded Joint [O] . Robert Kosturek, Lucjan Śnieżek, Marcin Wachowski, 2019

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7. Influence of Welding Parameters on Weld Formation and Microstructure of Dual-Laser Beams Welded T-Joint of Aluminum Alloy [O] . Min Li, Zhuguo Li, Yong Zhao, 2011

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8. The influence of thermal treatments upon the microstructure and mechanical properties of aluminum-aluminum oxide alloys [R] . Dromsky, J. A., Lenel, F. V. 1963

机译：热处理对铝 - 铝氧化物合金组织和力学性能的影响

Influence of surface enhanced treatment on microstructure and fatigue performance of 6005A aluminum alloy welded joint

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