Open AccessEffects of Sm on Microstructure of Mg-12Gd-2Y-0.5Zr Alloy
Author(s) -
Kejie Li,
H. Xu,
Zhangming Tong
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/569/2/022017
Subject(s) - microstructure , alloy , materials science , metallurgy , matrix (chemical analysis) , vickers hardness test , composite material
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, Mg 41 Sm 5 , Mg 5 Gdm, Mg 24 Y 5 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.