Magnesium secondary alloys: Alloy design for magnesium alloys with improved tolerance limits against impurities

被引：76

作者：

Blawert, C. ^{[1
]}

Fechner, D. ^{[1
]}

Hoeche, D. ^{[1
]}

Heitmann, V. ^{[1
]}

Dietzel, W. ^{[1
]}

Kainer, K. U. ^{[1
]}

Zivanovic, P. ^{[2
]}

Scharf, C. ^{[2
]}

Ditze, A. ^{[2
]}

Groebner, J. ^{[2
]}

Schmid-Fetzer, R. ^{[2
]}

机构：

[1] GKSS Forschungszentrum Geesthacht GmbH, D-21502 Geesthacht, Germany

[2] Tech Univ Clausthal, Inst Met, D-38678 Clausthal Zellerfeld, Germany

来源：

CORROSION SCIENCE | 2010年 / 52卷 / 07期

关键词：

Magnesium; Secondary alloy; Intermetallics; Weight loss; Hydrogen over-potential; CORROSION BEHAVIOR; MECHANICAL-PROPERTIES; MICROSTRUCTURE; AZ63; CONSTITUENT;

D O I：

10.1016/j.corsci.2010.03.035

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

The development of secondary magnesium alloys requires a completely different concept compared with standard alloys which obtain their corrosion resistance by reducing the levels of impurities below certain alloy and process depending limits. The present approach suitable for Mg-Al based cast and wrought alloys uses a new concept replacing the beta-phase by tau-phase, which is able to incorporate more impurities while being electro-chemically less detrimental to the matrix. The overall experimental effort correlating composition, microstructure and corrosion resistance was reduced by using thermodynamic calculations to optimise the alloy composition. The outcome is a new, more impurity tolerant alloy class with a composition between the standard AZ and ZC systems having sufficient ductility and corrosion properties comparable to the high purity standard alloys. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2452 / 2468

页数：17

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