Al-4Mg-Sc-Zr四元系富Al角430 ℃相关系

中国稀土学报, 2007, 25(5): 615-619.

Al-4Mg-Sc-Zr四元系富Al角430 ℃相关系

戴晓元 ^1, , 夏长清 ^2, , 王杰文 ^3, , 罗要菊 ^4, , 华熳煜 ^5,

1.长沙理工大学材料科学与工程学院,湖南,长沙,410076;中南大学材料科学与工程学院,湖南,长沙,410083

2.中南大学材料科学与工程学院,湖南,长沙,410083

3.中南大学材料科学与工程学院,湖南,长沙,410083

4.长沙理工大学材料科学与工程学院,湖南,长沙,410076

5.长沙理工大学材料科学与工程学院,湖南,长沙,410076

基金项目: 湖南省自然科学基金(06JJ4111)

关键词：相图 , Al-4Mg-Sc-Zr系 , Al3Zr1-0.8Sc0-0.2 , Al3Sc1-0.5Zr0-0.5 , 稀土

Phase Relations in Al-4Mg-Sc-Zr Quaternary System in Aluminum-Rich Region at 430 ℃

通过显微组织观察、 X射线衍射分析和电子探针分析测定Al-4Mg-Sc-Zr四元系富Al角430 ℃等温截面的相关系. 结果表明: 在扩大的Al-4Mg-Sc-Zr四元430 ℃等温截面图中存在一个单相区、两个双相区和一个三相区. 具有L12型结构的Al3Sc1-0.5Zr0-0.5相和具有DO23型结构的Al3Zr1-0.8Sc0-0.2相与α(Al)固溶体在平衡状态下共存, 其中Zr在Al3Sc中的最大溶解度可达12.5%(原子分数), 在Al3Zr中最多可溶解5.0% (原子分数)的Sc.

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Al-4Mg-Sc-Zr四元系富Al角430 ℃相关系

Phase Relations in Al-4Mg-Sc-Zr Quaternary System in Aluminum-Rich Region at 430 ℃

参考文献