Microstructure and Mechanical Properties of Aluminum/Stainless Steel Joints Welded by Different Weld Heat Input

Hong Tao Zhang; Jia Kun Liu; Hong Yun Zhao

doi:10.4028/www.scientific.net/AMR.189-193.3253

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Microstructure and Mechanical Properties of Aluminum/Stainless Steel Joints Welded by Different Weld Heat Input

Abstract:

Dissimilar metals joints between aluminum and zinc-coated steel were joined by CMT machine with ER4043 filler metal. The microstructure and mechanical properties of the joints obtained with different heat input were analyzed. The results showed that the thickness of interfacial intermetallic compound was determined by the welding heat input. Tensile specimens were broken in HAZ of aluminum base metal and the tensile strength of the joint can reach 122.3MPa.