Effects of Sm on Microstructure of Mg-12Gd-2Y-0.5Zr Alloy

2019 2nd International Conference on Advanced Materials, Intelligent Manufacturing and Automation

Li, Kejie^1 ; Xu, Haojie^1 ; Tong, Zhangming^1

College of Sino-German, Taizhou Vocational and Technical College, Taizhou, Zhejiang

318000, China^1

关键词: Aging treatment;    Mg matrix;    Microhardness tests;    Microstructure analysis;    Sm addition;    Solid solution strengthening;    Solution treatments;    Zr alloys;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/569/2/022017/pdf
DOI  :  10.1088/1757-899X/569/2/022017

来源: IOP

【 摘 要 】

By alloy melting, microstructure analysis and micro-hardness test, the effects of Sm addition on the microstructure of Mg-12Gd-2Y-0.5Zr alloy with solution treatment and aging treatment were investigated. The results showed that the microstructure of the tested alloy consisted of α-Mg matrix, Mg41Sm5, Mg5Gdm, Mg24Y5 and β' phases, and Sm improved the micro-hardness value of α-Mg matrix attributed to its better solid solution strengthening effect in α-Mg. The micro-hardness of the alloy with Sm increases obviously from HV121.4 to HV134.3 when compared with that of Mg-12Gd-2Y-0.5Zr alloy.