Impact of Mg addition on solidification behaviour of Al-7% Si alloy

被引：6

作者：

Nafisi, S. ^{[1
]}

Emadi, D. ^{[2
]}

Ghomashchi, R. ^{[3
]}

机构：

[1] IPSCO Inc, Regina, SK S4P 3C7, Canada

[2] NRCAN, CANMET Mat Technol Lab, Ottawa, ON K1A 0G1, Canada

[3] Adv Mat & Proc Res Inst, Richmond Hill, ON L4S 0A1, Canada

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2008年 / 24卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

solidification; Al-Si alloy; Mg addition; semisolid; thermal analysis; DSC;

D O I：

10.1179/174328408X269268

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The impact of Mg addition to Al7Si alloy is investigated using thermal and image analyses. It is shown that Mg expands alpha-Al solidification range and eutectic forms over a thermal range. For alloys containing less than 0.6% Mg, differential scanning calorimetry analysis and thermo-dynamic calculations are incapable of predicting the formation of Mg2Si phase during solidification. Furthermore, Mg addition leads to the formation of greater percentage of alpha-Al primary phase which is beneficial during semisolid processing of hypoeutectic Al-Si alloys.

引用

页码：718 / 724

页数：7