许娟,李鹏飞,郭锋

• 1:内蒙古工业大学材料科学与工程学院

摘要(Abstract)：

通过金相分析、XRD、SEM及TEM等分析手段,研究了AZ91D镁合金热处理状态下的相结构变化,结果表明:AZ91D镁合金在420℃固溶保温20 h,β-Mg17Al12几乎全部分解,Al原子以置换固溶的形式进入到Mg基体中;175℃时效保温不同的时间,随着时效保温时间的延长,析出相的析出方式和形态都发生变化。TEM观察发现,时效18 h的AZ91D镁合金中存在着短柱状的析出相,β-Mg17Al12与α-Mg之间存在着[011]β//[13 42]α的位向关系。

关键词(KeyWords)： AZ91D镁合金;热处理;相结构

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 许娟,李鹏飞,郭锋

DOI: 10.13289/j.issn.1009-6264.2011.04.010

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