On the microstructure and corrosion behavior of AZ91/SiC composites produced by rheocasting

被引：47

作者：

Esmaily, M. ^{[1
]}

Mortazavi, N. ^{[2
]}

Svensson, J. E. ^{[1
]}

Halvarsson, M. ^{[2
]}

Jarfors, A. E. W. ^{[3
]}

Wessen, M. ^{[3
]}

Arrabal, R. ^{[4
]}

Johansson, L. G. ^{[1
]}

机构：

[1] Chalmers, Dept Chem & Chem Engn, SE-41296 Gothenburg, Sweden

[2] Chalmers, Dept Appl Phys, SE-41296 Gothenburg, Sweden

[3] Jonkoping Univ, Dept Mat & Mfg Casting, SE-55111 Jonkoping, Sweden

[4] Univ Complutense, Fac Ciencias Quim, Dept Ciencia Mat, E-28040 Madrid, Spain

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2016年 / 180卷

基金：

瑞典研究理事会;

关键词：

Magnesium alloy; Composite materials; Microstructure; Corrosion; METAL-MATRIX COMPOSITES; AL ALLOY AM50; ATMOSPHERIC CORROSION; MAGNESIUM ALLOYS; MECHANICAL-BEHAVIOR; GALVANIC CORROSION; GRAIN-REFINEMENT; SIC PARTICLES; MG; NACL;

D O I：

10.1016/j.matchemphys.2016.05.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure and atmospheric corrosion behavior of two types of SiC (10 vol%)-reinforced magnesium alloy metal matrix composites (Mg alloy AZ91D-based MMCs) produced by rheocasting (RC) were investigated and compared to the monolithic alloy. Micron-sized and nano-sized SiC particles were used for fabrication of the MMCs. Microstructural studies using a broad range of analytical techniques showed the formation Al carbides and MgO at the alpha-Mg/SiC interface. The higher corrosion rate of the MMCs than RC AZ91D was attributed to a lesser degree of connectivity of the beta phase, the high impurity level of SiC-reinforced MMCs and also the higher fraction of casting pores in the MMCs as compared to the RC alloy. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：29 / 37

页数：9

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