A new cast Mg-Y-Sm-Zn-Zr alloy with high hardness

作者：Lyu, Shaoyuan; Li, Guodong; Hu, Tong; Zheng, Ruixiao; Xiao, Wenlong^*; Ma, Chaoli^*

来源：Materials Letters, 2018, 217: 79-82.

DOI：10.1016/j.matlet.2018.01.041

• Mg-Y-Sm-Zn alloy
• Cast
• Microstructure
• Hardness

The microstructure and aging precipitates of a new cast Mg-Y-Sm-Zn-Zr alloy were investigated. The results showed that eutectic phase forming in solidification process was proved to be (Mg,Zn)(3)(Y,Sm). The alloy exhibited high hardness (maximum value of 148 HV), which is higher in comparison with other high rare-earth Mg alloy. The aging precipitate beta' is thermally stable at 200 degrees C for the crystal structure of beta' kept unchanged in the whole aging process.

• 出版日期2018-4-15
• 单位北京航空航天大学