Effects of Extrusion Deformation on Microstructure and Properties of Mg95Zn4.3Y0.7 Alloy

Shao Mingxing; Lu Qingliang; Xu Peihao; Min Guanghui

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Effects of Extrusion Deformation on Microstructure and Properties of Mg₉₅Zn_4.3Y_0.7 Alloy
Issue 5, Pages: 288-290(2006)
Published： 2006 ，
DOI：

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[1]邵明星,卢庆亮,徐培好,闵光辉.挤压变形对Mg_(95)Zn_(4.3)Y_(0.7)合金组织和性能的影响[J].特种铸造及有色合金,2006(05):288-290+254.

Shao Mingxing, Lu Qingliang, Xu Peihao, et al. Effects of Extrusion Deformation on Microstructure and Properties of Mg₉₅Zn_4.3Y_0.7 Alloy. [J]. Special Casting & Nonferrous Alloys (5):288-290(2006)
[1]邵明星,卢庆亮,徐培好,闵光辉.挤压变形对Mg_(95)Zn_(4.3)Y_(0.7)合金组织和性能的影响[J].特种铸造及有色合金,2006(05):288-290+254. DOI：

Shao Mingxing, Lu Qingliang, Xu Peihao, et al. Effects of Extrusion Deformation on Microstructure and Properties of Mg₉₅Zn_4.3Y_0.7 Alloy. [J]. Special Casting & Nonferrous Alloys (5):288-290(2006) DOI：

摘要

研究了在250℃、不同挤压比下挤压变形对Mg95Zn4.3Y0.7合金组织及性能的影响。结果表明

Mg95Zn4.3Y0.7经过挤压变形后

合金中晶界处的共晶相破碎

弥散分布至晶粒内部

并且晶粒显著细化。同时

随着挤压比的增大

晶粒细化程度增加

合金的力学性能单调增加。当挤压比为16时

合金晶粒尺寸为5～8μm

抗拉强度为288.9MPa

显微硬度HV值为117.8。

Abstract

Effects of extrusion deformation on microstructure and properties of Mg95Zn4.3Y0.7 alloy were investigated at 250 ℃ with different extrusion ratios. The results show that the eutectic phase in the boundary of the extruded alloy is broken up to dispersively distribute into grain

obviously refining the grain size. Meanwhile

with increasing in extrusion ratio

the mechanical properties of the extruded alloy are improved due to grain refinement. With extrusion ratio of 16

results was observed such as grain size of 5

μm

tensile strength of 288.9 MPa and micro-hardness of 117.8.