Abstract The role of Zn with different existence forms in three kinds of welded joints was discussed in this paper. Net-like zinc oxide cermet structure formed in aluminum alloy/stainless steel fusion-brazed joints, and the thickness of interfacial layer increased after post-weld heat treatment. In aluminum alloy/galvanized steel fusion-brazed welded joints, the thickness of interfacial layer first increased, then decreased from weld toe to root, and block Zn aggregated at the bottom of weld. Zn layer also formed in aluminum alloy/galvanized steel refilled friction stir spot welded joint along the interface of aluminum alloy and steel where the joint fractured.

中文翻译：

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ZnO在铝合金与钢异种焊接中的形成机制

摘要 讨论了不同存在形式的Zn在三种焊接接头中的作用。铝合金/不锈钢熔焊接头形成网状氧化锌金属陶瓷结构，焊后热处理后界面层厚度增加。在铝合金/镀锌钢熔焊焊接接头中，界面层厚度从焊趾到根部先增加后减小，Zn在焊缝底部聚集。锌层也在铝合金/镀锌钢再填充搅拌摩擦点焊接头中沿铝合金和钢的界面形成，接头断裂。