Authors: Yanni Wei Jinglong Li Jiangtao Xiong Fusheng Zhang
Publish Date: 2013/05/29
Volume: 22, Issue: 10, Pages: 3005-3013
Abstract
Aluminum 1060Al and stainless steel SUS321 austenitic were friction stir lap welded using a stir tool consisting of a cutting pin and a concave shoulder Two welding processes characterized by plunge depth of the pin were designed In process 1 the pin remains inside the Al metal and the pin tip approaches the stainless steel surface while in process 2 the pin tip penetrates through the Al metal and was inserted into the stainless steel to generate a machining process Morphological and compositional characterization of the joint revealed defectfree joining at the interface with a visible mixed layer corresponding to the possible phase FeAl3 and the solution of Fe in Al resulting in high tensile strength of up to 89 MPa in process 2 while in process 1 the tensile strength was up to 71 MPaThis work was financially supported by the National Natural Science Foundation of China Grant No 51071123 and the fund of the State Key Laboratory of Solidification Processing in NWPU Grant Nos 43QP2009 and 31TP2009 and 111 Project B08040
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