모재의 방향성에 따른 마찰교반용접 판재의 성형성에 관한 실험적 연구

Experimental Formability Investigation for FSW Sheets with Respect to Base Material's Directional Combination

  • 김대용 (한국기계연구원 부설 재료연구소 융합공정연구본부) ;
  • 이원오 (한국기계연구원 부설 재료연구소 융합공정연구본부) ;
  • 김준형 (삼성전자 정보통신총괄) ;
  • ;
  • 정관수 (서울대학교 재료공학부)
  • 발행 : 2009.02.01


In order to investigate the formability of friction stir welded(FSW) tailor welded blanks(TWB) with respect to the base material's directional combination, aluminum alloy AA6111-T4 sheets were welded with three different conjoining types: RD-RD, TD-RD and TD-TD. Here, RD and TD represent rolling and transverse directions, respectively. For experimental formability study, three tests with gradual complexity were performed: the simple tension test with various weld line directions for uni-axial elongation, the hemisphere dome stretching test for biaxial stretching and the cylindrical cup deep drawing test. As a result, all three forming tests showed that RD-RD type samples exhibited the best formability, while TD-TD type sheets showed the least formability performance.


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