Joining Dissimilar Mg/Al Alloys by Solid-State Friction Spot Welding

被引：2
|
作者：
Chai, Peng [1 ,2 ]
Yang, Kang [3 ]
Ji, Shude [3 ]
Ai, XinXin [3 ]
Lv, Zan [3 ]
Song, Qi [3 ]
机构：
[1] AVIC Mfg Technol Inst, Beijing, Peoples R China
[2] Beihang Univ, Sch Mech Engn & Automat, Beijing, Peoples R China
[3] Shenyang Aerosp Univ, Sch Aerosp Engn, Shenyang 110136, Liaoning, Peoples R China
来源：
JOM | 2019年 / 71卷 / 05期
关键词：
ALUMINUM-ALLOY; MECHANICAL-PROPERTIES; MICROSTRUCTURE; MAGNESIUM; MG; AL;
D O I：
10.1007/s11837-019-03401-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To reduce intermetallic compounds (IMCs), dissimilar Mg/Al alloys were joined by solid-state friction spot welding. No incomplete refilling was observed when Al sheet served as the upper sheet. Almost no IMCs formed at the sleeve-affected zone even though the sleeve plunged during welding. A 530-mu m-thick Al12Mg17 layer formed at the center of the Al/Mg joint due to a large amount of liquid phase formed during welding. Only a 5-mu m-thick Al3Mg2 layer formed in the Mg/Al joint because the oxide film on the Al sheet was difficult to break. The Al/Mg joint exhibited much higher lap shear failure load even though it had a thicker IMC layer. The joint formation mechanism was studied.
引用
收藏
页码：1760 / 1767
页数：8
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