Y对AZ31镁合金铸态组织和性能的影响

张金旺; 许并社

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Y对AZ31镁合金铸态组织和性能的影响

材料科学与工程 | 更新时间：2026-09-14

- Y对AZ31镁合金铸态组织和性能的影响
- Effects of Y on Microstructure and Mechanical Properties of As-cast AZ31 Magnesium Alloy
- 中北大学学报（自然科学版） 2009年30卷第2期页码：192-196
- 作者机构：
  
  1. 太原经济技术开发区
  2. 教育部新材料界面与工程重点实验室
  3. 太原理工大学材料科学与工程学院
- 作者简介：
- 基金信息：
  
  国家自然科学基金重大研究计划项目资助(90306014)
- DOI：
  中图分类号：
- 纸质出版：2009
- 稿件说明：
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张金旺, 许并社. Y对AZ31镁合金铸态组织和性能的影响[J]. 中北大学学报（自然科学版）, 2009,30(2):192-196.

张金旺, 许并社. Effects of Y on Microstructure and Mechanical Properties of As-cast AZ31 Magnesium Alloy[J]. 2009, 30(2): 192-196.
张金旺, 许并社. Y对AZ31镁合金铸态组织和性能的影响[J]. 中北大学学报（自然科学版）, 2009,30(2):192-196. DOI：

张金旺, 许并社. Effects of Y on Microstructure and Mechanical Properties of As-cast AZ31 Magnesium Alloy[J]. 2009, 30(2): 192-196. DOI：

摘要

采用真空熔炼炉制备AZ31Y镁合金

观察其微观组织

对析出相进行分析

并着重讨论了提高其力学性能的途径.结果表明

Y在AZ31镁合金中主要以块状Al2Y化合物形式存在;高熔点的Al2Y在合金凝固过程中首先析出

成为凝固的异质形核剂

从而细化了合金组织

改善了室温和高温力学性能;由于Y的强化

含Y AZ31镁合金平均晶粒尺寸降低幅度约为35.82%;室温抗拉强度、屈服强度和延伸率分别为212MPa

147 MPa和7.5%

200℃时分别为117 MPa

98 MPa和10.2%.

Abstract

AZ31 magnesium alloy was prepared in vacuum melting furnace.The alloy's microstructure and mechanical properties were studied

and precipitation phase was analyzed in a way to improve the alloy's mechanical properties.The results show that yttrium(Y) exists as the form of compound(Al2Y) in AZ31 magnesium alloy

and dystectic Al2Y as the heteromorphic nucleation emerges firstly in the course of alloy precipitation

which refines the alloy's microstructure and obviously improves the mechanical properties at room and high temperature.The average grain size of AZ31 magnesium alloy containing Y is reduced by 35.82%.Tensile strength

yield strength and elongation percentage reach 212 MPa

147 MPa

and 7.5% at room temperature respectively

and 117 MPa

98 MPa

and 10.2% at 200 ℃ respectively.

关键词

Keywords

references

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肖代红,宋日文,陈康华,等.Er对铸态Mg-Al-Zn-Mn合金组织与力学性能的影响[J].特种铸造与有色合金,2007(11):165-169.Xiao Daihong,Song Wen,Chen Kanghua,et al.Effects of erbium addition on microstructure and mechanicalproperties of as-cast Mg-AI-Zn-Mn magnesium alloys[J].Special Casting and Nonferrous Alloys,2007(11):165-169.(in Chinese)

Wu G H,Fan Y,Gao Y H,et al.The effect of Ca and rare earth elements on the microstructure,mechanicalproperties and corrosion behavior of AZ91D[J].Materials Science and Engineering A,2005,408:255-263.

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