Technical Note: A Major Loss in Tensile Strength of Friction Stir Welded Aluminum Alloy Joints Resulting from Atmospheric Corrosion

Esmaily M.; Svensson J. E.; Johansson L. G.

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Technical Note: A Major Loss in Tensile Strength of Friction Stir Welded Aluminum Alloy Joints Resulting from Atmospheric Corrosion

机译：Technical Note: A Major Loss in Tensile Strength of Friction Stir Welded Aluminum Alloy Joints Resulting from Atmospheric Corrosion

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摘要

The effect of corrosion on the mechanical properties of aluminum alloy (AA6005-T6) joints produced by friction stir welding is investigated. The tensile strength of the weldments was analyzed after 100 h exposure to 95 relative humidity air at 22 degrees C in the presence of NaCl and CO2. The corrosion exposure caused a significant decrease in the ultimate tensile strength and ductility of the welds. Microstructural studies revealed that the loss of mechanical properties is associated with corrosion in the vicinity of the joint line remnants (JLRs), which are commonly found in friction stir welds. The reasons behind the preferential corrosion of the JLRs and the effect of corrosion on the mechanical properties of the welds are discussed.

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来源
《Corrosion: The Journal of Science and Engineering》 |2016年第12期|1587-1596|共10页
作者
Esmaily M.; Svensson J. E.; Johansson L. G.;
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作者单位

Chalmers, Dept Chem & Chem Engn, SE-41296 Gothenburg, Sweden;

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原文格式 PDF
正文语种英语
中图分类金属腐蚀与保护、金属表面处理;
关键词
aluminum alloy; corrosion; friction stir welding; joint line remnants; mechanical properties;

Technical Note: A Major Loss in Tensile Strength of Friction Stir Welded Aluminum Alloy Joints Resulting from Atmospheric Corrosion

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