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| Effect of Be on Oxidation Behavior and Flame Retardancy of WE43 Mg-alloy at High-temperature |
ZHU Huiwen1, ZHENG Li1, ZHANG Hao2, YU Baoyi1( ), CUI Zhibo1 |
1. School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
2. Dalian Bingshan Metal Technology Co., Ltd., Dalian 116600, China |
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Cite this article:
ZHU Huiwen, ZHENG Li, ZHANG Hao, YU Baoyi, CUI Zhibo. Effect of Be on Oxidation Behavior and Flame Retardancy of WE43 Mg-alloy at High-temperature. Journal of Chinese Society for Corrosion and protection, 2024, 44(4): 1022-1028.
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Abstract The cast WE43 Mg-alloy with addition of 0.04%Be (WE43-0.04Be) was prepared by electromagnetic stirring melting and casting process, and then subjected to solid solution treatment at 525oC for 10 h plus aging treatment at 225oC for 6, 10 and 14 h, respectively. Afterwards, the microstructure, mechanical property, oxidation behavior and flame-retardant property were assessed for the prepared alloys. The results showed that the WE43-0.04Be alloy aged for 10 h possessed the best comprehensive performance, namely its tensile strength, yield strength and elongation were 253 MPa, 209 MPa and 8.3% respectively, which could meet the mechanical property requirements for high-speed railway structural parts. The WE43-0.04Be alloy will not burn in air when heated up to 850 o C in a furnace. A mixed oxide scale composed of compounds of Mg and alloying elements was generated on the surface of the alloy, thus inhibiting the inwards migration of aggressive species approching onto the interface oxide scale/WE43-0.04Be alloy.
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Received: 05 September 2023
32134.14.1005.4537.2023.277
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| Fund: China State Railway Group Co., Ltd. Science and Technology Research and Development Plan(P2020J024) |
Corresponding Authors:
YU Baoyi, E-mail: baoyiy@163.com
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