微量Si、Ba、Sn对AZ91铸态组织的影响

滕新营; 王彬; 王致明; 耿浩然

浏览量 : 0 下载量: 272 CSCD: 3

导出
分享
收藏
专辑

微量Si、Ba、Sn对AZ91铸态组织的影响
Effects of Trace Si,Ba and Sn on the As-cast Microstructure of AZ91 Magnesium Alloy
2007年第2期页码：83-85
纸质出版日期： 2007 ，
DOI：

扫描看全文

[1]滕新营,王彬,王致明,耿浩然.微量Si、Ba、Sn对AZ91铸态组织的影响[J].特种铸造及有色合金,2007(02):83-85+77.

Teng Xinying, Wang Bin, Wang Zhiming, et al. Effects of Trace Si,Ba and Sn on the As-cast Microstructure of AZ91 Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2007,(2):83-85.
[1]滕新营,王彬,王致明,耿浩然.微量Si、Ba、Sn对AZ91铸态组织的影响[J].特种铸造及有色合金,2007(02):83-85+77. DOI：

Teng Xinying, Wang Bin, Wang Zhiming, et al. Effects of Trace Si,Ba and Sn on the As-cast Microstructure of AZ91 Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2007,(2):83-85. DOI：

摘要

研究了Si、Ba、Sn元素对AZ91镁合金铸态组织的影响。结果表明

添加少量的Si能够细化AZ91合金晶粒

但当Si含量（质量分数

下同）达0.50%时

会产生粗大的汉字状Mg2Si相。向AZ91-0.5Si合金中加入微量的Ba后

粗大的Mg2Si相消失

这与合金中形成了Al4Ba相有关。添加一定量的Sn能够形成高熔点的Mg2Sn相

对合金有细化晶粒的作用

添加量为0.50%时β（Mg17Al12）相由网状变为弥散的颗粒状。分析认为

0.50%的Sn可以提高Al原子在α（Mg）中的固溶度。

Abstract

Effects of Si

Ba and Sn element on the as-cast microstructure of AZ91 magnesium alloy have been observed. The results show that although trace Si addition can refine the grain size of AZ91 magnesium alloy

0.5%Si addition can result in the creation of coarse Chinese script Mg

Si phase in the alloy. Coarse Mg

Si particles can not be observed with adding minor Ba into AZ91 magnesium alloy containing 0.5% Si

which is attributed to the formation of Al

Ba phase in the alloy. Trace Sn addition can refine the grain size of the alloy due to the creation of Mg

Sn phase with a high melt point

where β-Mg

17 Al

12 phase is converted from net-like structure into disperoids with 0.50% Sn addition. And 0.50% Sn addition can increase solid solution degree in Al atom.