刘平,康布熙,曹兴国,黄金亮,顾海澄

• 1:西安交通大学材料学院
• 2:洛阳工学院材料系
• 3:洛阳工学院材料系
• 4:西安交通大学材料学院

摘要(Abstract)：

快速凝固ＣｕＣｒ和ＣｕＣｒＺｒＭｇ合金经时效处理后显微硬度显著升高，在５００℃时效后，ＣｕＣｒ合金的硬度峰值为２０６ＨＶ，ＣｕＣｒＺｒＭｇ合金的硬度峰值为２５０ＨＶ。用透射电镜对两种合金时效过程中析出相的变化及其对显微硬度的影响进行了分析。ＣｕＣｒ合金达到峰值硬度时析出相为与母相共格的面心立方Ｃｒ，随后逐渐与母相失去共格关系并转变成体心立方的Ｃｒ。ＣｕＣｒＺｒＭｇ合金对应峰值状态的析出相为Ｈｅｕｓｌｅｒ相ＣｒＣｕ２（ＺｒＭｇ），过时效状态下转变成面心立方的Ｃｕ５Ｚｒ和体心立方的Ｃｒ

关键词(KeyWords)： Zr,Mg,快速凝固,时效析出

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金

作者(Author): 刘平,康布熙,曹兴国,黄金亮,顾海澄

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