La添加量对ZM5镁合金显微组织及力学性能的影响

郭光平; 古文全; 吴健; 薛涛; 吴泽宏; 李英; 张翠翠

doi:10.15980/j.tzzz.2017.05.023

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La添加量对ZM5镁合金显微组织及力学性能的影响
Effects of La Addition on Microstructure and Mechanical Properties of As-cast ZM5 Magnesium Alloys
2017年37卷第5期页码：542-545
纸质出版日期： 2017 ，
DOI： 10.15980/j.tzzz.2017.05.023

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[1]郭光平,古文全,吴健,薛涛,吴泽宏,李英,张翠翠.La添加量对ZM5镁合金显微组织及力学性能的影响[J].特种铸造及有色合金,2017,37(05):542-545.

Guo Guangping, Gu Wenquan, Wu Jian, et al. Effects of La Addition on Microstructure and Mechanical Properties of As-cast ZM5 Magnesium Alloys[J]. Special Casting & Nonferrous Alloys, 2017,37(5):542-545.
[1]郭光平,古文全,吴健,薛涛,吴泽宏,李英,张翠翠.La添加量对ZM5镁合金显微组织及力学性能的影响[J].特种铸造及有色合金,2017,37(05):542-545. DOI： 10.15980/j.tzzz.2017.05.023.

Guo Guangping, Gu Wenquan, Wu Jian, et al. Effects of La Addition on Microstructure and Mechanical Properties of As-cast ZM5 Magnesium Alloys[J]. Special Casting & Nonferrous Alloys, 2017,37(5):542-545. DOI： 10.15980/j.tzzz.2017.05.023.

摘要

研究了不同稀土La添加量对ZM5合金的铸态显微组织和室温力学性能的影响。结果表明

添加La能够使ZM5合金中的α-Mg晶粒组织细化

并形成稀土化合物Al

和Al

LaMn

。随La添加量的增加

沿晶界网状分布的β-Mg

相逐渐转变为弥散分布。其中

La添加量为0.8%时铸态ZM5合金的室温力学性能最好

抗拉强度和伸长率分别为225 MPa和5.32%。

Abstract

Effects of La addition on microstructure and mechanical properties of the ZM5 were investigated.The results show that the grain sizes ofα-Mg phase can be greatly refined by La addition

and the Al

LaMn

phases are precipitated from ZM5 contained La alloys.With the increase of the La addition

net-likeβ-Mg

at grain boundary is distributed dispersedly into the alloy.The ZM5+0.8La alloy exhibits the desirable tensile properties

where the tensile strength and elongation reach 225 MPa and 5.32% at room temperature

respectively.