Role of zinc coat in friction stir lap welding Al and zinc coated steel
Role of zinc coat in friction stir lap welding Al and zinc coated steel
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DOI：
10.1179/174328407x248505
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发表时间：
2008-01-01
影响因子：
1.8
通讯作者：
Nakata, K.
中科院分区：
文献类型：
--
作者：
Chen, Y. C.;Komazaki, T.;Nakata, K.
采用搅拌摩擦焊技术成功实现了AC4C铸造铝合金与镀锌钢的搭接焊接。能够获得等强接头，且接头在镀锌钢母材一侧断裂，而在相同焊接条件下铝合金与未镀锌钢无法焊接。提出了铝合金与镀锌钢搅拌摩擦搭接焊的连接机理以及镀锌层的作用。镀锌层的介入促进了界面处Al - Zn低熔点共晶组织的形成，显著提高了铝与钢的可焊性。
AC4C cast Al alloy and Zn coated steel were successfully lap welded using friction stir welding technology. Full strength joints could be obtained and the joints fractured at Zn coated steel base metal side, while Al alloy and unzinced steel could not be welded in the same welding conditions. The joining mechanism and the role of Zn coat on friction stir lap welding of Al alloy and Zn coated steel were put forward. The intervention of Zn coat promoted the formation of Al-Zn low melting point eutectic structure at the interface, which significantly improved the weldability of Al and steel.