CALPHAD simulation of the Mg-(Mn, Zr)-Fe system and experimental comparison with as-cast alloy microstructures as relevant to impurity driven corrosion of Mg-alloys

被引：55

作者：

Gandel, D. S. ^{[1
,2
]}

Easton, M. A. ^{[1
,2
]}

Gibson, M. A. ^{[1
,3
]}

Birbilis, N. ^{[1
,2
]}

机构：

[1] CAST Cooperat Res Ctr, St Lucia, Qld, Australia

[2] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia

[3] CSIRO Proc Sci & Engn, Clayton, Vic 3168, Australia

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2014年 / 143卷 / 03期

关键词：

Alloys; Computer modelling and simulation; Electron microscopy; Corrosion; ELECTROCHEMICAL PROPERTIES; MAGNESIUM; BEHAVIOR; ELEMENTS; PANDAT;

D O I：

10.1016/j.matchemphys.2013.11.008

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

Four Mg alloys with variations in the ratio of Mn, Zr and Fe additions were cast and their microstructures analysed via electron microscopy. Thermodynamic calculations of the expected phases using PANDAT were evaluated with actual as-cast microstructures. Some of the as-cast alloys did appear to form phases similar to those anticipated from the PANDAT calculations. Furthermore, there was a new Mn Fe particle interaction observed that was not predicted, but which is posited to be responsible for the increase in corrosion resistance among Mn containing Mg alloys with Fe impurities. The experimental work herein has been shown to be invaluable in the understanding of this practically important system with sparingly soluble Fe and its potential influence on the corrosion of Mg alloys. (C) 2013 Published by Elsevier B.V.

引用

页码：1082 / 1091

页数：10

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