Effects of isothermal homogenization on microstructure evolution of Mg-7Gd-5Y-1MM-0.5Zr alloy
来源期刊：Journal of Rare Earths2015年第4期
论文作者：李蒙 李兴刚 张奎 李永军 马鸣龙 石国梁 袁家伟 刘靖宝
文章页码：439 - 444
摘 要：Optical microscopy（OM）, scanning electronic microscopy（SEM） and X-ray diffraction（XRD） were performed to investigate the influence of homogenization on the microstructures of the Mg-7Gd-5Y-1MM（Ce-rich RE）-0.5Zr magnesium alloy. The results indicated that α-Mg, Mg24（Gd Y）5 phase, Mg5（Gd Y） phase and Mg12 MM phase coexisted together in as-cast alloy; the microstructures were largely characterized by α-Mg matrix and gray globular or elliptic ball Mg12 MM phase, in addition to those with cubic block Mg24（Gd Y）5 phase after homogenization; the reasonable homogenization regime was maintained at 530 oC for 32 h.
李蒙，李兴刚，张奎，李永军，马鸣龙，石国梁，袁家伟，刘靖宝
State Key Laboratory for Fabrication and Processing of Non-Ferrous Metals, General Research Institute for Non-Ferrous Metals
摘 要：Optical microscopy（OM）, scanning electronic microscopy（SEM） and X-ray diffraction（XRD） were performed to investigate the influence of homogenization on the microstructures of the Mg-7Gd-5Y-1MM（Ce-rich RE）-0.5Zr magnesium alloy. The results indicated that α-Mg, Mg24（Gd Y）5 phase, Mg5（Gd Y） phase and Mg12 MM phase coexisted together in as-cast alloy; the microstructures were largely characterized by α-Mg matrix and gray globular or elliptic ball Mg12 MM phase, in addition to those with cubic block Mg24（Gd Y）5 phase after homogenization; the reasonable homogenization regime was maintained at 530 oC for 32 h.
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