铸态Mg-Gd-Y-Zr镁合金均匀化工艺研究

马志新; 张家振; 李德富; 张奎

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铸态Mg-Gd-Y-Zr镁合金均匀化工艺研究
Homogenizing Process for As-cast Mg-Gd-Y-Zr Magnesium Alloy
2007年第9期页码：659-662
纸质出版日期： 2007 ，
DOI：

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[1]马志新,张家振,李德富,张奎.铸态Mg-Gd-Y-Zr镁合金均匀化工艺研究[J].特种铸造及有色合金,2007(09):659-662+651.

Ma Zhixin, Zhang Jiazhen, Li Defu, et al. Homogenizing Process for As-cast Mg-Gd-Y-Zr Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2007,(9):659-662.
[1]马志新,张家振,李德富,张奎.铸态Mg-Gd-Y-Zr镁合金均匀化工艺研究[J].特种铸造及有色合金,2007(09):659-662+651. DOI：

Ma Zhixin, Zhang Jiazhen, Li Defu, et al. Homogenizing Process for As-cast Mg-Gd-Y-Zr Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2007,(9):659-662. DOI：

摘要

通过金相组织分析和显微硬度测试

研究了不同均匀化温度和时间条件下铸态Mg-Gd-Y-Zr镁合金的显微组织和显微硬度值

分析了均匀化温度和时间对铸态合金组织变化和性能的影响。结果表明

均匀化工艺能有效消除铸造组织中沿晶界分布的大块金属间化合物

改善合金的热加工性能

在均匀化过程中温度起着主要作用。确定了铸态Mg-Gd-Y-Zr镁合金最佳的均匀化工艺为510℃×12h。

Abstract

The microstructure and micro-hardness of Mg-Gd-Y-Zr magnesium alloy homogenized at different temperatures for different times were investigated by means of metallography analysis and micro-hardness measurement. The results indicate that the hot working performance of the magnesium alloy can be greatly improved as result of the elimination of bulk intermetallic compounds distributed along the grain boundary after homogenizing treatment after homogenizing treatment

in which the homogenizing process strictly depends on the temperature. The optimized microstructure and micro-hardness of as-cast magnesium alloy can be observed by homogenizing treatment at 510 ℃ for 12 h.