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Journal of KWJS 2006;24(1):71-76.
Published online April 3, 2006.
[연구논문] 마찰교반 점용접한 A 5052 알루미늄 합금판재의 접합부 특성
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[Research Papers] Joint Characteristics of Spot Friction Stir Welded A 5052 Alloy Sheet
Yun-Mo Yeon, Won-Bae Lee, Chang-Yong Lee, Seung-Boo Jung, Keun Song
Abstract
In this study, the microstructure and mechanical properties of spot friction stir welded A 5052 alloy were investigated. Especially, the effect of insertion depth of welding tool on microstructural changes and mechanical properties was investigated in order to obtain the optimum spot friction stir welding condition. The lap shear load of spot friction stir welded A 5052 alloy plates showed lower value at the shallowest insertion depth and increased with tool insertion depth. At 1.6㎜, the maximum value of 3.35 kN was obtained, and then dropped to lower load when the insertion depth was deeper. Spot friction stir welded joints showed shear fracture mode at shallower insertion depths and fracture mode changed to plug fracture mode as the insertion depth was deeper.
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