A Study on the Thermal Behavior of Friction Stir Welding in hi 6061 Alloys

Al 6061합금의 마찰교반접합시 접합부의 열거동에 관한 연구

  • 방한서 (조선대학교 선박해양공학과) ;
  • 김흥주 (포항산업과학연구원 용접센터) ;
  • 고민성 (조선대학교 선박해양공학과 대학원) ;
  • 김규훈 (조선대학교 선박해양공학과 대학원)
  • Published : 2002.08.01

Abstract

In the various industry such as shipbuilding and automobile, etc., Al-alloys are used to reduce weight and improve economical efficiency, and they are mainly utilized in the process of Friction Stir Welding (FSW). A number of studies have been carried out on the metallurgical characteristics of friction stir welding In Al-alloys. However, research on the thermal behavior of FSW by using numerical analysis is not sufficient in the domestic and abroad. In this paper, therefore, numerical simulation was used to find out thermal behaviour of FSW by finite element method. We considered heat source that occurred by friction between tool shoulder including pin and base metal. To confirm the result of simulation, macrostructure is examined and compared after welding. The result of numerical simulation shows that Al-alloy is welded under a melting point of Al around pin by FSW.

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References

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