Study on low temperature brazing of magnesium alloy to aluminum alloy using Sn–xZn solders |
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| Affiliation: | 1. College of Material Science and Engineering, University of Science and Technology Beijing, 100083, PR China;2. State Power Investment Central Research Institute, Beijing 100083, PR China;1. Lehrstuhl Werkstofftechnik, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany;2. BIAS – Bremer Institut für angewandte Strahltechnik GmbH, Klagenfurter Str. 2, 28359 Bremen, Germany;1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin, 150001, PR China;2. Flexible Printed Electronics Technology Center, Harbin Institute of Technology, Shenzhen, 518055, PR China;3. Department of Mechanical Engineering, The University of Sheffield, Sheffield, S10 2TN, UK;1. Dept. of Mechanical and Industrial Engineering, Northeastern University, 360 Huntington Ave, Boston, MA 02115, United States;2. Dept. of Chemical Engineering, University of Massachusetts Lowell, 1 University Ave, Lowell, MA 01854, United States;1. School of Mechanical Engineering, Anhui Science and Technology University, Bengbu 233100, PR China;2. College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China;3. School of Material Science & Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China |
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| Abstract: | In this article, a series of Sn–xZn solders are designed for joining Mg/Al dissimilar metals by low temperature brazing. The effect of Zn content in Sn–Zn solders on microstructure evolution and mechanical properties of the different brazed joints are investigated. The experimental results indicate that Sn–30Zn alloy is identified as the optimized solder. Al–Sn–Zn solid solutions form and disperse in the brazing zone of the Mg/Sn–30Zn/Al brazed joint, decreasing the risk of embrittlement of the brazed joint. The average shear strength of Mg/Sn–30Zn/Al brazed joint can reach 70.73 MPa. The joint fractures in the coarse blocky Mg2Sn intermetallic phases in the center of the brazing zone. |
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