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http://dx.doi.org/10.3795/KSME-A.2007.31.4.532

Effects of Tool Rotation and Transition Speed during Friction Stir Welding of Al 7075-T651 Alloy  

Han, Min-Su (목포해양대학교 기관시스템공학부 대학원)
Jeon, Jeong-Il (신양금속주식회사 생산관리팀)
Jang, Seok-Gi (목포해양대학교 기관시스템공학부 대학원)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.31, no.4, 2007 , pp. 532-539 More about this Journal
Abstract
The 7075-T651 Al alloy was welded by friction stir welding. Microstructure, macro behaviors and fracture type in the nugget, thermo-mechanically affected zone(TMAZ) and heat affected zone(HAZ) of the welded part were compared to base metal. The microsturctures of nugget zone were compared with tool rotation speeds and various tool transition speed. When the rotation speeds were decreased and transition speeds were increased, the hardness of nugget zone were decreased. Also, the optimal microstructure was observed at the low rotation speed of 800rpm and the high transition speed of 124mm/min. The transgranular dimple and quasi-cleavage at fractured part of nugget zone were investigated.
Keywords
Friction Stir Welding(FSW); Heat Affect Zone(HAZ); Thermo-Mechanically Affected Zone(TMAZ); Nugget; Base Metal(BM);
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
Times Cited By SCOPUS : 1
연도 인용수 순위
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