Measurements of Residual Stress and Angular Distortion of 7075 Aluminum Alloy after Gas Tungsten Arc Welding

Shih Jeh Wu; Chiao Wei Chung; Chen Ming Kuo

doi:10.4028/www.scientific.net/AMM.302.452

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 302Measurements of Residual Stress and Angular...

Measurements of Residual Stress and Angular Distortion of 7075 Aluminum Alloy after Gas Tungsten Arc Welding

Abstract:

7075 aluminum alloy is one of the most popular materials for structure. There are lots of demands for welding these structural materials. During the fast high temperature heating and cooling process serious residual stress is generated that causes the deterioration of structure strength. In this study, we investigate the residual stress induced in 7075 aluminum alloy after gas tungsten arc welding. X-ray diffraction method is applied to measure the residual stress under different joint angles. The angular distortion is also measured by a 3-D imaging system. Results show that both residual stress and angular distortion increase with the preparation angle.

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Periodical:

Applied Mechanics and Materials (Volume 302)

Pages:

452-456

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.302.452

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Online since:

February 2013

Authors:

Shih Jeh Wu, Chiao Wei Chung, Chen Ming Kuo

Keywords:

7075 Aluminum Alloy, Angular Distortion, Gas Tungsten Arc Welding (GTAW), Residual Stress, X-Ray Diffraction (XRD)

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