少量Ca对Mg-3Ce-1.2Mn-0.9Sc和Mg-4Y-1.2Mn-0.9Sc镁合金铸态组织和力学性能的影响(英文)

被引:1
|
作者
杨明波 [1 ,2 ,3 ]
段成宇 [2 ]
吴德勇 [2 ]
潘复生 [3 ]
机构
[1] 重庆理工大学汽车零部件制造及检测技术教育部重点实验室
[2] 重庆理工大学材料科学与工程学院
[3] 重庆大学国家镁合金工程材料研究中心
关键词
镁合金; Mg-RE-Mn-Sc合金; Ca添加;
D O I
暂无
中图分类号
TG146.22 [];
学科分类号
摘要
通过光学显微镜、电子显微镜、差热分析以及抗拉和蠕变性能测试等手段,研究和比较0.6%Ca(质量分数)添加对Mg-3Ce-1.2Mn-0.9Sc和Mg-4Y—1.2Mn-0.9Sc镁合金铸态组织和力学性能的影响。结果表明:添加0.6%Ca能细化Mg-3Ce-1.2Mn-0.9Sc和Mg-4Y。-1.2Mn-0.9Sc合金的晶粒。同时,添加0.6%Ca也能有效改善Mg-3Ce-1.2Mn-0.9Sc和Mg-4Y-1.2Mn-0.9Sc合金的抗拉性能。此外,添加0.6%Ca能改善Mg—3Ce—1.2Mn-0.9Sc合金的蠕变性能,但对Mg-4Y—1.2Mn-0.9Sc合金的蠕变性能是不利的。少量Ca对Mg-3Ce-1.2Mn-0.9Sc和Mg—4Y—1.2Mn-0.9Sc合金蠕变性能的不同影响可能与Ce和Y在Mg中的固溶度存在差异有关。
引用
收藏
页码:1698 / 1708
页数:11
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