Phases evolution and Y solid solution microstructure in the Mg-6Zn-3Y alloy solidified under super-high pressure
The solidification microstructure of Mg-6Zn-3Y alloy under super-high pressure was investigated by using X-ray diffraction (XRD) and scanning electron microscope (SEM). The results show that the dendritic structure of Mg-6Zn-3 Y alloy under super-high pressure (GPa level) can be evidently refined with the increase of solidification pressure. When the pressure increases to 2 GPa, Y element cant solubilize in matrix of a-Mg, the primary Y solid solution is distributed in the shape of polygon block in the matrix. When the pressure is up to 4 GPa, the primary Y solid solution appears as symmetrical petaline shape. So Y solid solution exhibits the different morphology with the change of the pressure.
refined structure solidification under super-high pressure dendritic structure polygonal Y solid solution
DONG Yun LIN Xiao-ping ZHENG Runguo JIAO Suihui
Department of Material Science and Technology, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
国际会议
大连
英文
1347-1350
2011-10-19（万方平台首次上网日期，不代表论文的发表时间）