Microstructure and corrosion behavior of Al-10%Mg2Si cast alloy after heat treatment

被引：50

作者：

Li, Chong ^{[1
]}

Sun, Jiayue ^{[1
]}

Li, Zedi ^{[1
]}

Gao, Zhiming ^{[1
]}

Liu, Yongchang ^{[1
]}

Yu, Liming ^{[1
]}

Li, Huijun ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300350, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2016年 / 122卷

基金：

中国国家自然科学基金;

关键词：

Al alloy; Microstructure; Corrosion; Eutectic Mg2Si; Heat treatment; P MASTER ALLOY; MG-SI ALLOYS; TENSILE PROPERTIES; AL-15-PERCENT-MG2SI COMPOSITE; HYPEREUTECTIC AL-MG2SI; NANOCRYSTALLINE MG2SI; MATRIX COMPOSITES; EXTRA SI; EVOLUTION; PERFORMANCE;

D O I：

10.1016/j.matchar.2016.10.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure and corrosion behavior of Al-10%Mg2Si alloy after heat treatment are investigated. For Al-10%Mg2Si in 3.5 wt.% NaCl solution, corrosion of alpha-Al phase initiates in (Al + Mg2Si) binary eutectic zones with electrochemical polarity change of Mg2Si phase, and expands along the eutectic Mg2Si precipitates. After heat treatment, eutectic Mg2Si transforms from long flakes and rods to short fibers, disks and spheroidized particles. The transformation of eutectic Mg2Si phase suppresses the rapid expansion of corrosion pits, which leads to enhancing the corrosion resistance of Al-10%Mg2Si alloy. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：142 / 147

页数：6

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