Phase equilibria and solidification of Mg-rich Al-Mg-Si alloys

被引：6

作者：

Valdes, R ^{[1
]}

Freulon, A

Deschamps, JB

Qian, M

Lacaze, J

机构：

[1] ENSIACET, UMR 5085, CIRIMAT, F-31077 Toulouse 4, France

[2] Brunel Univ, Brunel Ctr Adv Solidificat Technol, Uxbridge UB8 3PH, Middx, England

来源：

SOLIDIFICATION AND GRAVITY IV | 2006年 / 508卷

关键词：

Al-Mg-Si alloys; solidification; phase equilibria; differential thermal analysis;

D O I：

10.4028/www.scientific.net/MSF.508.621

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The solidification and solid-state phase equilibria of four Al-Mg-Si alloys containing 30-70%Mg and 0.5-3.5%Si, selected on the basis of an isothermal section of the Al-Mg-Si system calculated at 300 degrees C, have been investigated. Solidification paths of Mg-rich Al-Mg-Si alloys finish on ternary eutectics and the temperatures of two of these eutectic reactions, i.e. L <->(Al)+beta+ Mg(2)Si and L <->(Mg)+gamma+ Mg(2)Si, have been determined to be at similar to 448 degrees C and similar to 436 degrees C respectively by DTA. The characteristic temperatures recorded on the DTA curves are analysed and a linear relationship is found between the peak temperature and the square root of the scanning rate.

引用

页码：621 / 627

页数：7