Retrogression and re-aging treatment on short transverse tensile properties of 7010 aluminium alloy extrusions

被引：44

作者：

Angappan, M. ^{[1
]}

Sampath, V. ^{[2
]}

Ashok, B. ^{[1
]}

Deepkumar, V. P. ^{[1
]}

机构：

[1] Aeronaut Dev Agcy, Bangalore 560017, Karnataka, India

[2] Indian Inst Technol, Dept Met & Mat Engn, Madras 600036, Tamil Nadu, India

来源：

MATERIALS & DESIGN | 2011年 / 32卷 / 07期

关键词：

STRESS-CORROSION CRACKING; MICROSTRUCTURE;

D O I：

10.1016/j.matdes.2011.03.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of retrogression and re-aging treatment (RRA) on short transverse tensile properties of 7010 aluminium alloy extrusions was studied. The short transverse ductility of extrusions, which was much lower in the T6 condition, was improved to the optimum level after retrogression and re-aging treatment. It is found that short transverse ductility is influenced by the nature of precipitate particles located along the grain boundary. It is observed that coarsening of the grain boundary precipitates and its copper enrichment that occurs during RRA are found to be the factors responsible for improvement in stress corrosion cracking (SCC) resistance. The optimum retrogression and re-aging schedule is established that gives rise to the best combination of strength, ductility and SCC resistance. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：4050 / 4053

页数：4

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