Journal
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
Volume 35, Issue 5, Pages 937-945Publisher
WUHAN UNIV TECHNOLOGY
DOI: 10.1007/s11595-020-2340-3
Keywords
cold metal transfer; microstructure; microhardness; dissimilar metals
Categories
Funding
- National Natural Science Foundation of China [51905333]
- Shanghai Sailing Program [19YF1418100]
- Shanghai Science and Technology Committee Innovation Grant [17JC1400600, 17JC1400601, 19511106400, 19511106402]
- Shanghai Local Colleges and Universities Capacity Building Special Plan Project [19030501300]
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Aluminum alloy 6061 was welded with zinc coated low carbon steel by cold metal transfer (CMT). The microstructure composition, morphology and growth process of the welding joint and the HAZ were researched. The weld area on the side of the galvanized steel sheet mainly contains Fe2Al5. And on the side of the aluminum alloy substrate, it is mainly filled with a needle-like FeAl3. At the same time, Al8Fe2Si is formed at the edge of FeAl3. The zinc-rich region on the side of the aluminum alloy mainly contains an aluminum-zinc solid solution and an aluminum-zinc co-crystal, and the current size had no significant effect on the type and morphology of the compounds produced in the interface layer.
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