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| Structure and Diffusion Mechanism of MB2/LY12 Joint by Diffusion Welding |
| ZHANG Jian, LUO Guoqiang, LI Meijuan, WANG Yiyu, SHEN Qiang, ZHANG Lianmeng |
| State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 |
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Cite this article:
ZHANG Jian LUO Guoqiang LI Meijuan WANG Yiyu SHEN Qiang ZHANG Lianmeng. Structure and Diffusion Mechanism of MB2/LY12 Joint by Diffusion Welding. Chin J Mater Res, 2012, 26(2): 138-142.
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Abstract MB2 alloy and LY12 alloy were welded by vacuum diffusion welding. The element distribution and intermetallic compounds at the interface were characterized by Scanning Acoustic Microscopy, SEM, XRD and EPMA. The results show that the welding interface bonding rate can be improved with the welding temperature, and the welding interface bonding can be achieved completely at the condition of 3MPa, 100min and 480 ". The solid solution Al(ss, Mg) and Mg(ss, Al) formed at the interface. Also, Al12Mg17, AlMg and Al3Mg2 formed at the interface, where the joint fracture occurred, and the thickness of the intermetallic compounds increase with increase of the temperature. The reaction layers of MB2 and LY12 welding joints can be divided into the following stages: effective physical contact, solid solution
generating, intermetallic reaction layer generating, and intermetallic layer growing.
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Received: 08 August 2011
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| Fund: Supported by National Nature Science Foundation of China No.11072228 and the Fundamental Research Funds for the Central Universities No.2011–IV–038. |
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