한국표면공학회지 (42권6호 294-300)
Characteristics of Friction Stir Lap Welded A5052 with Probe Length
프루브 길이에 따른 A5052 겹치기 마찰교반접합 특성
고영봉;강채원;최준웅;박경채;
Ko, Young-Bong;Kang, Chae-Won;Choi, Jun-Woong;Park, Kyeung-Chae;
한국화학시험연구원;경북대학교 금속신소재공학과;중소조선연구원;
Korea Testing & Research Institute;Materials Science and Metallurgical Engineering of Kyungpook National University;Research Institute of Medium & Small Shipbuilding;
The Friction Stir Welding (FSW) has mainly been used for making butt joints in Al alloys. The development of Friction Stir Lap Welding (FSLW) would expand the number of applications. In this study, for effective application on thin aluminum alloy lap joint, non-heat treatment A5052 alloys were joined by FSLW with the length of probe 2.3 mm and 3.0 mm. Investigating the characteristics of joint area showed the results were as below ; When the length of probe was 2.3 mm, good joint area was formed at all welding condition except for 600 rpm-700 mm/min. In the case of 3.0 mm probe length, there was formed good joint area without defects at 1500 rpm-100 mm/min. The width of joint area, position and size of defects were very important factors for FSLW, due to heat input and stirring intensity.
Friction stir lap welding;Probe length;Heat input;Stirring intensity;A5052;
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