High strength lap joint of aluminium and stainless steels fabricated by friction stir welding with cutting pin

J. T. Xiong, J. L. Li, J. W. Qian, F. S. Zhang, W. D. Huang

科研成果: 期刊稿件文章同行评审

64 引用 (Scopus)

摘要

Dissimilar lap joints of aluminium and stainless steel were first friction stir welded by the tool with a cutting pin. The results showed that sound joints could be obtained by this method. When the pin was inserted into the lower steel sheet, macrointerlocks were formed by the steel flashes plugging into the upper aluminium at both sides of the nugget bottom. At the aluminium/steel interface, a thin intermetallic compound (IMC) layer and the mechanical bonding of microinterlocks were formed. In addition, the aluminium near the interface was also strengthened by grain refinement and IMC particles. Therefore, the beneficial effect of the macrointerlocks provided by the steel flashes was removed, the shear strength of the joint reached 89·7 MPa, which was even higher than that of the base metal of aluminium.

源语言英语
页(从-至)196-201
页数6
期刊Science and Technology of Welding and Joining
17
3
DOI
出版状态已出版 - 3 4月 2012

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