Corrosion behaviour of friction stir welded AA7108 T79 aluminium alloy

被引：122
作者：
Wadeson, DA
Zhou, X
Thompson, GE
Skeldon, P
Oosterkamp, LD
Scamans, G
机构：
[1] Univ Manchester, Ctr Corros & Protect, Manchester M60 1QD, Lancs, England
[2] Hydro Aluminium, R&D Mat Technol, N-4265 Havik, Norway
[3] Innoval Technol Ltd, Banbury OX16 1TQ, Oxon, England
来源：
CORROSION SCIENCE | 2006年 / 48卷 / 04期
基金：
英国工程与自然科学研究理事会;
关键词：
aluminium; welding; intergranular corrosion;
D O I：
10.1016/j.corsci.2005.02.020
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The corrosion behaviour of a friction stir welded AA7108 T79 aluminium alloy has been investigated using accelerated testing (ASTM G34 EXCO) and electrochemical measurements. The welded alloy showed the expected zones associated with friction stir welding, namely nugget, thermomechanically affected zone and heat affected zone. Corrosion testing revealed that the edge regions of the thermomechanically affected zone were most susceptible to corrosion. The localized corrosion occurs intergranularly due to the non-uniform distribution of eta/eta' (MgZn2) precipitates within the thermomechanically affected zone. (C) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：887 / 897
页数：11
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