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http://dx.doi.org/10.14775/ksmpe.2013.12.6.045

Effect of Welding Condition and Tool Shape on Defect Formation of Extruded AA6005 with Non-uniform Thickness using Load-Controlled Friction Stir Welding Technique  

Yoon, Tae-Jin (Pusan National Univ., Graduate School of Convergence Science)
Kang, Myung-Chang (Pusan National Univ., Graduate School of Convergence Science)
Jung, Byong-Ho (Pukyong National Univ., School of Mechanical Engineering)
Kang, Chung-Yun (Pusan National Univ., School of Materials Science and Engineering)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.12, no.6, 2013 , pp. 45-51 More about this Journal
Abstract
Friction stir welding using aluminum alloys has been widely applied for transportation vehicles because of the light specific weight, which can be used to obtain sound joint and high mechanical properties. This study shows the effects of rotation speed, welding speed, welding load, and tool shape on defect formation with extruded AA6005, which is used for railway vehicle structures of non-uniform thickness welded by friction stir welding using load control systems. Optical microscopy observations and liquid penetrant testing of each FSW joint were carried out in order to observe defect formation. Two kinds of defects, that of probe wear and that of lack of penetration in the bottom of the welded zone, were observed. In the case of using a taper shaped tool, the defect free zone is very narrow, within 100 kgf; however, in case of using a cylindrical shape tool, the defect free zone is wider.
Keywords
Friction stir welding; Aluminium Alloy; Defect formation; Welding conditions; Tool shape;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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