Effect of tool eccentricity on surface periodic banded structures in friction stir welding

4th Global Conference on Materials Science and Engineering

Guo, N.^1 ; Wang, M.R.^2 ; Meng, Q.^3 ; Zhou, L.^1 ; Tang, D.Y.^2

Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai

264209, China^1

Department of Chemistry, School of Science, Harbin Institute of Technology, Harbin

150001, China^2

Beijing Aeronautical Manufacturing Technology Research Institute, Beijing

100024, China^3

关键词: Advancing side;    Banded structures;    Forming mechanism;    Motion characteristics;    Retreating side;    Surface formation;    Welding tools;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/103/1/012020/pdf
DOI  :  10.1088/1757-899X/103/1/012020

来源: IOP

【 摘 要 】

This paper describes the relationship between tool eccentricity and surface formation of periodic banded structures in friction stir welding. Motion characteristics of welding tool are calculated to explore the forming mechanism of banded structures. The results reveal that the welding tool motion differences on advancing side and retreating side caused by eccentricity are crucial for the formation of banded structures. The crests and troughs of banded structures form during tool motion on retreating side and advancing side, respectively.