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Evaluation of Residual Stress Fields in Friction Stir Welded Zone Based on the Plastic Strain Increment and Mises Yield Criterion

文献类型：期刊论文

作者Li, Yiyang; Zhao, Jiaye6; Zhou, Jiangfan5; Yang, Yang4; Huang XF(黄先富); Liu, Zhanwei
刊名JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
出版日期2022-10-10
ISSN号1059-9495
关键词aluminum alloy DIC method friction stir welding mises yield criterion plasticity theory residual stress field
DOI10.1007/s11665-022-07477-x
英文摘要The residual stress generated during the welding process affects the mechanical properties of the material. In this study, a measurement method of residual stress fields in the friction stir welded zone is developed based on the plastic strain increment and Mises yield criterion. First, the relationship among the residual stress, the measured local yield strength, and the plastic strain increment is derived according to the Mises yield criterion. Then, through uniaxial tensile tests, the stress-strain curve of any point in the friction stir welded zone is obtained using the digital image correlation method. Finally, the distribution of residual stress around the friction stir welded zone is characterized by the derived relationship on the basis of accurately obtaining the local yield strength. The feasibility of the method developed in this paper for measuring residual stress is verified by comparison with the results of the mechanical method combined with the charge coupled device Moire method. Additionally, other material parameters such as modulus and yield strength can also be measured at the same time. The proposed method is applied to a mechanical properties evaluation of the friction stir welded joint of an aluminum alloy 6061T6 thin plate. The results show that the residual stress around the weld is tensile, showing a bimodal distribution, and the peak value of the residual stress is located in the thermomechanical affected zone. The strength has a double-valley distribution, and the local yield strength of the thermomechanical affected zone is the lowest. The mechanical properties of the thermomechanical affected zone are relatively poor, and it is the location that is prone to fracture.
学科主题Materials Science, Multidisciplinary
分类号Q4
语种英语
WOS记录号WOS:000865710100006
资助机构National Natural Science Foundation of China [11972084] ; National Science and Technology Major Project [2017-VI-0003-0073] ; Beijing National Science Foundation [1192014]
其他责任者Li, YY (corresponding author), Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China.
源URL[http://dspace.imech.ac.cn/handle/311007/90186]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China
3.AECC Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China
4.Beijing Inst Struct & Environm Engn, Beijing 100076, Peoples R China
5.Inst Flexible Elect Technol Tsinghua, Beijing 314006, Zhejiang, Peoples R China
6.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China
推荐引用方式
GB/T 7714		 Li, Yiyang,Zhao, Jiaye,Zhou, Jiangfan,et al. Evaluation of Residual Stress Fields in Friction Stir Welded Zone Based on the Plastic Strain Increment and Mises Yield Criterion[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2022.
APA Li, Yiyang,Zhao, Jiaye,Zhou, Jiangfan,Yang, Yang,黄先富,&Liu, Zhanwei.(2022).Evaluation of Residual Stress Fields in Friction Stir Welded Zone Based on the Plastic Strain Increment and Mises Yield Criterion.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE.
MLA Li, Yiyang,et al."Evaluation of Residual Stress Fields in Friction Stir Welded Zone Based on the Plastic Strain Increment and Mises Yield Criterion".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2022).

入库方式： OAI收割

来源：力学研究所

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