Influence of high-temperature pre-precipitation on local corrosion behaviors of Al-Zn-Mg alloy

被引：136

作者：

Huang, L. P. ^{[1
]}

Chen, K. H. ^{[1
]}

Li, S. ^{[1
]}

Song, M. ^{[1
]}

机构：

[1] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

来源：

SCRIPTA MATERIALIA | 2007年 / 56卷 / 04期

关键词：

Al-Zn-Mg alloy; high-temperature pre-precipitation; exfoliation corrosion; inter-granular corrosion; stress corrosion cracking;

D O I：

10.1016/j.scriptamat.2006.09.028

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of high-temperature pre-precipitation treatment on the microstructure, age-hardening, stress corrosion cracking, inter-granular corrosion and exfoliation corrosion of Al-Zn-Mg alloy have been investigated. High-temperature pre-precipitation can enhance the distribution discontinuity of grain boundary precipitates, increase the Cu content in grain boundary precipitates and lead to the increase in the critical stress intensity factor in salt solutions with the same strength and ductility. In addition, Al-Zn-Mg alloy with pre-precipitation treatment has an enhanced resistance to inter-granular and exfoliation corrosion. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：305 / 308

页数：4

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