Grain refinement of Mg-Li-Al cast alloys by adding typical master alloys

被引：12

作者：

Jiang, Bin ^{[1
,2
]}

Yang, Qing-shan ^{[2
]}

Zhang, Ming-xing ^{[3
]}

Qiu, Dong ^{[3
]}

Li, Rui-hong ^{[2
]}

Pan, Fu-sheng ^{[1
,2
]}

机构：

[1] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

[3] Univ Queensland, Sch Mech & Min Engn, Div Mat, St Lucia, Qld 4072, Australia

来源：

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL | 2011年 / 21卷 / 03期

关键词：

magnesium lithium alloy; master alloy; grain refinement; MAGNESIUM-LITHIUM ALLOYS; SOLIDIFICATION; ALUMINUM; MODEL;

D O I：

10.1016/S1002-0071(12)60036-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Commercial Al-3Ti-1C and Al-5Ti-1B master alloys were added in order to refine the grains of Mg-Li-Al alloys. The effects of their addition levels on grain refinement of Mg-Li-Al cast alloy were investigated and the mechanism of the grain refinement was discussed. The results showed that the addition of Al-3Ti-1C master alloy reduced the grain size of LA141 cast alloy from 900 mu m to 400 mu m, while the addition of Al-5Ti-1B master alloy reduced the grain size of LA51 cast alloy from 500 mu m to 240 pm. The grain refining mechanism was the heterogeneity nucleation of TiC and TiB(2), because of less than 10% mismatches of TiC/beta-Li and TiB(2)/alpha-Mg.

引用

页码：236 / 239

页数：4

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