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마찰교반용접에서 툴의 형상이 접합부 강도에 미치는 영향에 관한 연구
천창근(Chang-Keun Chun),김흥주(Hyeng-Ju Kim),박인규(In-Gyu Park),전시현,장웅성(Woong-Seong Chang),Kyung-Su Umm 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월
As demand regarding a recent energy-saving rises, the using ratio of the aluminum plate in manufacturing of a railroad vehicle has been increasing. The aluminum structure to be applied to a railroad vehicle is divided to single skin and double skin, and the main aluminum product is mainly Al 6005 extrude and Al 5083 rolled in domestic market. The Al 6005 alloy is applied heat treatment in order to improve the strength of material. Therefore there is the disadvantage that the strength of welding zone decreases compare with base material's if you apply to fusion welding like MIG(metal inert gas) welding. In this paper we tried to apply friction stir welding to solve these problems. In this study we investigated how tensile strength and fatigue strength were changed in case of changing the shoulder diameter of thread tool.