Ultrasonic spot welding of magnesium alloy to titanium alloy

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• 作者：Daxin Ren^a ; ^b ; Kunmin Zhao^a ; ^c ; ^{kmzhao@dlut.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Min Pan^a ; Ying Chang^a ; Song Gang^b ; Dewang Zhao^d
• 关键词：Magnesium alloy ; Titanium alloy ; Ultrasonic welding
• 刊名：Scripta Materialia
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：126
• 期：Complete
• 页码：58-62
• 全文大小：1336 K

文摘

This research explores the joining between dissimilar alloys (magnesium alloy and titanium alloy) by ultrasonic spot welding. The tensile shear test shows that the joint strength increases with energy input. The fracture initiates inside magnesium alloy, indicating a high joining strength at the weld interface. Banded grain-refinement is found at the interface on the magnesium alloy side, neither transition layer nor inter-metallic compound layer is identified though. The interfacial temperature exceeds the temperature range for liquefying magnesium alloy. The precipitated aluminum from the liquid-phase magnesium alloy plays a bridging role in ultrasonic welding of magnesium alloy to titanium alloy.