Effect of recrystallization and heat treatment on strength and SCC of an Al-Zn-Mg-Cu alloy

被引：55

作者：

Chen, Songyi ^{[1
]}

Chen, Kanghua ^{[1
]}

Dong, Pengxuan ^{[1
]}

Ye, Shengping ^{[1
]}

Huang, Lanping ^{[1
]}

机构：

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

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 581卷

基金：

中国国家自然科学基金;

关键词：

Al-Zn-Mg-Cu alloy; Recrystallization; Heat treatment; Strength; Stress corrosion cracking; STRESS-CORROSION CRACKING; 7050; ALUMINUM-ALLOY; ZR ALLOY; HYDROGEN EMBRITTLEMENT; MICROSTRUCTURE; RESISTANCE; AA7050; TOUGHNESS; QUENCH; PLATE;

D O I：

10.1016/j.jallcom.2013.07.177

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The influences of recrystallization and heat treatment on strength, stress corrosion cracking (SCC) of an Al-Zn-Mg-Cu alloy have been investigated by tensile testing, slow strain rate testing combined with scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that with increasing the volume fraction of recrystallization, the strength and SCC-resistance decrease, and the predominated fracture mode transforms from transgranular fracture to intergranular fracture. Over-aging reduces the effect of recrystallization on SCC susceptibility. The differences of strength and SCC resistance are explained on the basis of the role of recrystallization and grain boundary precipitates. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：705 / 709

页数：5

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