Mn-30Al中间合金对镁合金的晶粒细化

曹凑先; 李建国; 谭敦强; 胡燕辉

轻有色合金 | 浏览量 : 0 下载量: 302 CSCD: 4

导出
分享
收藏
专辑

Mn-30Al中间合金对镁合金的晶粒细化
Grain Refining Effects of Mn-30Al Master Alloy on Magnesium Alloy
2010年30卷第1期页码：81-84
纸质出版日期： 2010 ，
DOI：

扫描看全文

[1]曹凑先,李建国,谭敦强,胡燕辉.Mn-30Al中间合金对镁合金的晶粒细化[J].特种铸造及有色合金,2010,30(01):81-84+127.

Cao Couxian1, Li Jianguo2, Tan Dunqiang1, et al. Grain Refining Effects of Mn-30Al Master Alloy on Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2010,30(1):81-84.
[1]曹凑先,李建国,谭敦强,胡燕辉.Mn-30Al中间合金对镁合金的晶粒细化[J].特种铸造及有色合金,2010,30(01):81-84+127. DOI：

Cao Couxian1, Li Jianguo2, Tan Dunqiang1, et al. Grain Refining Effects of Mn-30Al Master Alloy on Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2010,30(1):81-84. DOI：

摘要

采用真空淬火炉制备出含ε-AlMn相的Mn-30Al中间合金和含γ2-Al8Mn5相的Mn-30Al中间合金

观察了两种中间合金的组织

并探讨ε-AlMn相、γ2-Al8Mn5相、Mn和Al对镁合金的晶粒细化效果。试验表明

相比添加Mn、Al

含γ2-Al8Mn5相的Mn-30Al中间合金对AZ31镁合金存在一定的细化效果

含ε-AlMn相的Mn-30Al中间合金对AZ31镁合金具有更好的细化效果。当含ε-AlMn相的Mn-30Al中间合金添加量为0.4%时

AZ31镁合金的晶粒尺寸由原来的898μm减小至320μm

Mg-Zn合金晶粒尺寸由原来的320μm减小至180μm。通过面错配度计算

ε-AlMn可以成为初生α-Mg晶粒的良好异质形核核心。

Abstract

The master alloy Mn-30Al containing ε-AlMn phase and the Mn-30Al alloy containing γ2-Al8Mn5 phase were prepared by vacuum quenching furnace

and microstructure of two kinds of master alloys were observed

meanwhile

effects of ε-AlMn phase

γ2-Al8Mn5 phase

Mn and Al on grain refinement of magnesium alloy were analyzed.The results reveal that refining effects of Mn-30Al master alloy containing ε-AlMn phase on the magnesium alloy are obviously superior to Mn-30Al alloy containing γ2-Al8Mn5 phase

Al.With 0.4% Mn-30Al master alloy containing ε-AlMn phase

grain size of AZ31 magnesium alloy and Mg-Zn alloy are decreased from 898 μm to 320 μm and from 320 μm to 180 μm

respectively.ε-AlMn phase can be acted as desirable heterogeneous nuclei through surface misfit calculation.