The effect of cryogenic CO2 cooling on corrosion behaviour of friction stir welded AA2024-T351

被引：17
|
作者：
Jariyaboon, M. [1 ]
Davenport, A. J. [1 ]
Ambat, R. [1 ]
Connolly, B. J. [1 ]
Williams, S. W. [2 ]
Price, D. A. [2 ]
机构：
[1] Univ Birmingham, Birmingham B15 2TT, W Midlands, England
[2] ATC Sowerby, BAE SYSTEMS, Bristol BS34 7QW, Avon, England
来源：
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2009年 / 44卷 / 06期
关键词：
Friction stir welding; CO2; cooling; Corrosion; Aluminium alloy; ALUMINUM-ALLOYS; WELDING PARAMETERS; MICROSTRUCTURE; PRECIPITATION; FATIGUE; TIG;
D O I：
10.1179/147842208X373173
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cryogenic cooling with CO2 was applied during friction stir welding of AA2024-T351 in order to reduce the temperature increase during welding, and thus improve the corrosion resistance of the weld. The effect of cryogenic cooling on corrosion susceptibility was investigated with gel visualisation, immersion tests and local electrochemical measurements. The most susceptible area for both uncooled and cooled welds was in the heat-affected zone (HAZ) region, which showed intergranular attack. Cryogenic cooling had no detectable influence on the degree of anodic reactivity in the weld region. However, it did decrease the width of the reactive HAZ.
引用
收藏
页码：425 / 432
页数：8
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