Microstructure and Mechanical Properties of a New Hot Extruded Mg-2Ca-5Zn Alloy

Mao Pingli; Yang Chunhai; Zhang Yue; Wang Feng; Liu Zheng

doi:10.15980/j.tzzz.2013.01.023

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Microstructure and Mechanical Properties of a New Hot Extruded Mg-2Ca-5Zn Alloy
Vol. 33, Issue 1, Pages: 9-11(2013)
Published： 2013 ，
DOI： 10.15980/j.tzzz.2013.01.023

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[1]毛萍莉,杨春海,张越,王峰,刘正.新型挤压Mg-2Ca-5Zn合金的组织与性能[J].特种铸造及有色合金,2013,33(01):9-11.

Mao Pingli, Yang Chunhai, Zhang Yue, et al. Microstructure and Mechanical Properties of a New Hot Extruded Mg-2Ca-5Zn Alloy. [J]. Special Casting & Nonferrous Alloys 33(1):9-11(2013)
[1]毛萍莉,杨春海,张越,王峰,刘正.新型挤压Mg-2Ca-5Zn合金的组织与性能[J].特种铸造及有色合金,2013,33(01):9-11. DOI： 10.15980/j.tzzz.2013.01.023.

Mao Pingli, Yang Chunhai, Zhang Yue, et al. Microstructure and Mechanical Properties of a New Hot Extruded Mg-2Ca-5Zn Alloy. [J]. Special Casting & Nonferrous Alloys 33(1):9-11(2013) DOI： 10.15980/j.tzzz.2013.01.023.

摘要

采用光学显微镜、扫描电镜、万能材料试验机研究了热挤压后Mg-2Ca-5Zn镁合金的显微组织与力学性能。结果表明

挤压Mg-2Ca-5Zn合金具有较细的晶粒组织

第二相Ca2Mg6Zn3与Mg2Ca被破碎

其分布变得细小弥散;挤压Mg-2Ca-5Zn合金比铸造镁合金的力学性能有较大提高

其抗拉强度与伸长率分别达到368MPa和11.8%。

Abstract

The microstructure and mechanical properties of the hot extruded Mg-2Ca-5Zn magnesium alloy were investigated by the optical microscope（OM）

scanning electron microscope（ SEM） and universal material testing machine. The results indicate that the fine grains in the extruded Mg-2Ca-5Zn magnesium alloy can be observed

and the Ca2Mg6Zn3 and Mg2Ca phase are dispersedly distributed due to its broken state. Meanwhile

the tensile strength and elongation of the extruded Mg-2Ca-5Zn magnesium alloy are 368MPa and 11.8%

respectively

apparently superior to those of the as-cast alloy.