Microstructure of die cast and thixocast ZAEX10430 (Mg-10Zn-4Al-3Ce-0.3Ca) alloy

被引：3

作者：

Amira, S. ^{[1
]}

Dube, D. ^{[2
]}

Tremblay, R. ^{[2
]}

Ghali, E. ^{[2
]}

机构：

[1] NRC ATC, Aluminum Technol Ctr, Saguenay, PQ G7H 8C3, Canada

[2] Univ Laval, Dept Min Met & Mat Engn, Quebec City, PQ G1V 0A6, Canada

来源：

MATERIALS CHARACTERIZATION | 2013年 / 76卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Magnesium alloy; Mg-Zn-Al-Ce-Ca; Die-casting; Thixocasting; Microstructure; Phase analysis; Creep; AL-RE ALLOYS; MECHANICAL-PROPERTIES; MAGNESIUM ALLOYS; ZA104;

D O I：

10.1016/j.matchar.2012.12.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure and phase composition of die cast and thixocast ZAEX10430 (Mg-10Zn-4Al-3Ce-0.3Ca) alloy were studied. Two intermetallic phases were identified in both the die cast and the thixocast specimens: the tau-phase doped with calcium (Mg,Ca)(32)(Al,Zn)(49) (or tau'-phase) and the (Al,Zn)(x)Ce isomorphous phase with Al2CeZn2 and Al4Ce. In all of the specimens, the tau'-phase crystallized mostly as fine elongated particles and within a lamellar constituent. Needle-like (Al,Zn)(x)Ce phase particles were visible in the die cast specimens, whereas coarse particles of various cross-sectional shapes (polygonal, elliptical, rod-like, etc.) were observed in the thixocast specimens. The difference in morphology of the intermetallic (Al,Zn)(x)Ce particles in the matrix and the presence of large primary alpha-Mg grains in the thixocast specimens was used to explain the different creep behavior of die cast and thixocast ZAEX10430 alloy reported previously. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：48 / 54

页数：7

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