Effects of RE Element Ce on Solidification Structure of Eutectic Mg-Al Alloy

Zhang Ren; Yuan Sen; Jiang Bailing; Wang Wuxiao

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Effects of RE Element Ce on Solidification Structure of Eutectic Mg-Al Alloy
Issue 5, Pages: 310-312(2006)
Published： 2006 ，
DOI：

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[1]张韧,袁森,蒋百灵,王武孝.Ce对共晶Mg-Al合金组织的影响[J].特种铸造及有色合金,2006(05):310-312+256.

Zhang Ren, Yuan Sen, Jiang Bailing, et al. Effects of RE Element Ce on Solidification Structure of Eutectic Mg-Al Alloy. [J]. Special Casting & Nonferrous Alloys (5):310-312(2006)
[1]张韧,袁森,蒋百灵,王武孝.Ce对共晶Mg-Al合金组织的影响[J].特种铸造及有色合金,2006(05):310-312+256. DOI：

Zhang Ren, Yuan Sen, Jiang Bailing, et al. Effects of RE Element Ce on Solidification Structure of Eutectic Mg-Al Alloy. [J]. Special Casting & Nonferrous Alloys (5):310-312(2006) DOI：

摘要

模拟AZ91镁合金半固态液相凝固后期的成分

分析了共晶成分镁铝合金添加不同含量的稀土元素Ce后

铸态显微结构的变化。结果表明:Ce的加入改变了合金的组织

增加了初晶α相的含量

细化了β相并减少了β相的含量。随着稀土Ce加入量的增加

在Ce的加入量为0.6%时

所得的组织最好;在Ce含量大于0.6%时

随着Ce加入量的增加

细化效果反而变差。

Abstract

The evolution of as-cast microstructure of eutectic Mg-Al alloy with different Ce addition is observed by simulating the components of addition the alloy in the late solidification. The results show that liquid Ce can remarkably change the microstructure of the alloy

where the primary α phase is increased and the β phase is refined and inhibited. The desirable microstructure with 0.6% Ce addition can be observed

while in turn

with Ce addition more than 0.6%

the refinement effects is inferior with Ce addition increase.