Al-Zn-Mg-Cu合金时效析出相的研究

材料热处理学报, 2011, 32(z1): 79-82.

Al-Zn-Mg-Cu合金时效析出相的研究

夏朝峰 ^1, , 王良龙 ^2, , 陈思悦 ^3, , 金曼 ^4,

1.上海大学材料科学与工程学院,上海200072

2.上海大学材料科学与工程学院,上海200072

3.上海大学材料科学与工程学院,上海200072

4.上海大学材料科学与工程学院,上海200072

基金项目: 国家级大学生创新实验项目

关键词： Al-Zn-Mg-Cu铝合金 , 三维原子探针 , GPI区 , η’相

Research of precipitates in a Al-Zn-Mg-Cu alloy after aging

采用硬度测试、电导率测量、透射电镜及三维原子探针对Al-Zn-Mg-Cu合金470℃固溶2h,然后120℃时效后的合金组织和相关性能进行分析.结果表明,试验合金在120℃时效6h后硬度值的变化比较小,此时的强化析出相为GPI区和η’相,GPI区是由Zn和Mg共同组成的团簇,η’相的化学成分不是固定的,Zn/Mg比的范围为1～1.6.合金的电导率在时效初期迅速升高,时效时间超过6h后合金的电导率上升的速度比时效初期的小.

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Al-Zn-Mg-Cu合金时效析出相的研究

Research of precipitates in a Al-Zn-Mg-Cu alloy after aging

参考文献