Intermetallic compounds and antiphase domains in Al/Mg compound casting

被引：44

作者：

Hajjari, E. ^{[1
]}

Divandari, M. ^{[1
]}

Razavi, S. H. ^{[1
]}

Homma, T. ^{[2
]}

Kamado, S. ^{[2
]}

机构：

[1] Iran Univ Sci & Technol, Dept Met & Mat Engn, Tehran 1684613114, Iran

[2] Nagaoka Univ Technol, Dept Mech Engn, Nagaoka, Niigata 9402188, Japan

来源：

INTERMETALLICS | 2012年 / 23卷

关键词：

Intermetallics; miscellaneous; Casting; Joining; Defects: antiphase domains; AL-ALLOY; MG ALLOY; BOUNDARIES; MICROSTRUCTURE; CU3AU;

D O I：

10.1016/j.intermet.2011.12.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Interfacial microstructure of Al/Mg light metals couples prepared by compound casting process was studied. The interface consists of three different layers. The layers adjacent to the Al and Mg base metals are mainly composed of Al3Mg2 intermetallic compound and (Al12Mg17+delta) eutectic structure, respectively, and the middle layer is mainly composed of Al12Mg17 intermetallic compound. A network of periodic antiphase domains (APDs) was detected within the Al12Mg17 intermetallic compound at the middle layer. The size of the APDs was not constant throughout the layer containing this intermetallic compound and was depended on the amount of deviation from the stoichiometric proportion (SP) of the Al12Mg17 intermetallic compound. It was found that by increasing the deviation from the SP the size of the APDs of the Al12Mg17 intermetallic compound decreases and the density of the antiphase boundaries (APBs) increases. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：182 / 186

页数：5

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[2]

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