• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2020, Vol. 56 ›› Issue (6): 184-192.doi: 10.3901/JME.2020.06.184

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State-of-art of Experimental Characterization of Material Flow in Friction Stir Welding

ZHEN Yunqian, LIU Xiaochao, SHEN Zhikang, CHEN Haiyan   

  1. Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi'an 710072
  • Received:2019-08-30 Revised:2019-11-03 Online:2020-03-20 Published:2020-05-12

Abstract: Friction stir welding (FSW), as a relatively new solid-state welding technique, is a promising technique in the field of aerospace, high-speed train, automobile, shipbuilding and other machinery manufacturing. Fully understanding the plastic flow of the deformed materials in the process of friction stir welding is of importance in theory for deeply understanding the mechanism of the weld formation and optimizing the welding process. The state-of-art of the experimental characterization of the material flow in friction stir welding is summarized, and the advantages and disadvantages of using dots, lines, planes and solids as marker materials to study the material flow are emphatically analysed. Further, the research status of friction stir weld formation is reviewed, and the key scientific problems about the material flow which have not been solved effectively are discussed.

Key words: friction stir welding, material flow, marker materials, weld formation

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