Effects of Nd Content on Microstructure of As-cast Mg-11Li-1Al Alloy

Ji Guodong; Wu Ruizhi; Niu Zhongyi; Jing Xiaoyan; An Jiangmin

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Effects of Nd Content on Microstructure of As-cast Mg-11Li-1Al Alloy
Vol. 29, Issue 5, Pages: 462-464(2009)
Published： 2009 ，
DOI：

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[1]冀国栋,巫瑞智,牛中毅,景晓燕,安江敏.Nd含量对Mg-11Li-1Al合金组织的影响[J].特种铸造及有色合金,2009,29(05):462-464+390.

Ji Guodong, Wu Ruizhi, Niu Zhongyi, et al. Effects of Nd Content on Microstructure of As-cast Mg-11Li-1Al Alloy. [J]. Special Casting & Nonferrous Alloys 29(5):462-464(2009)
[1]冀国栋,巫瑞智,牛中毅,景晓燕,安江敏.Nd含量对Mg-11Li-1Al合金组织的影响[J].特种铸造及有色合金,2009,29(05):462-464+390. DOI：

Ji Guodong, Wu Ruizhi, Niu Zhongyi, et al. Effects of Nd Content on Microstructure of As-cast Mg-11Li-1Al Alloy. [J]. Special Casting & Nonferrous Alloys 29(5):462-464(2009) DOI：

摘要

采用真空熔炼法制备Mg-11Li-1Al-xNd合金

利用金相显微镜、SEM、XRD、EDS等研究Nd对Mg-11Li-1Al合金组织及性能的影响。结果表明

Nd元素的加入可以细化晶粒

使晶粒均匀化

合金硬度增大

加入3.0%左右的Nd

晶粒细化效果最佳

硬度最高。

Abstract

Mg-11Li-1Al-xNd alloy was prepared by vacuum electric arc melting method with argon atmosphere.Effects of different Nd content on microstructure and properties of the alloy were investigated by OM（optical microscope）

SEM（scanning electron microscope）

XRD（X-ray diffraction）

EDS(energy dispersive spectroscope

and micro-hardness tester.The results reveal that with increasing in Nd content

the grain size in the alloy is obviously refined with more homogeneous distribution and hardness of the alloy is increased.The desirable grain size in the alloy with maximum value of hardness can be obtained with approximately 3%Nd content.