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http://dx.doi.org/10.5916/jkosme.2013.37.2.135

Soundness evaluation of friction stir welded A2024 alloy by non-destructive test  

Ko, Young-Bong (한국화학융합시험연구원)
Kim, Gi-Beom (경북대학교 금속신소재공학과)
Park, Kyeung-Chae (경북대학교 금속신소재공학과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.37, no.2, 2013 , pp. 135-143 More about this Journal
Abstract
Friction Stir Welding (FSW) was developed, it is successfully commercialized in the field of transportation vehicles. In this study, we analyzed the defects of A2024-T4 alloy using non-destructive test of radiograph, ultrasonic, electrical conductivity and destructive test of microstructure observation, tensile strength. As the results of experiment, mapping of defects was obtained. Fine defects which were not detected in radiograph test were detected in ultrasonic test, and it enabled efficient detection of defects by difference of sound pressure and color. The values of electrical conductivity was decreased as amount of defects was increasing. Joint efficient of defect-free weldment that found by non-destructive and destructive test was 91%. Therefore it was considered that non-destructive test of friction stir welded A2024-T4 Alloy was an efficient method.
Keywords
Friction stir welding; A2024-T4 alloy; Non-destructive test; Electrical conductivity;
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