Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Influence of Anisotropy on Formability in Friction Stir Welded Sheet

마찰교만용접 판재에 있어서 모재의 방향성이 성형성에 미치는 영향

  • Kim, D. ;
  • Lee, W. ;
  • Kim, J.H. ;
  • Kim, Chong-Min (General Motors) ;
  • Chung, K.
  • 김대용 (한국기계연구원 부설 재료연구소 소성응용연구그룹) ;
  • 이원로 (한국기계연구원 부설 재료연구소 복합재료연구그룹) ;
  • 김준형 (삼성전자) ;
  • ;
  • 정관수 (서울대학교 재료공학부)
  • Published : 2008.10.09
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Abstract

In order to investigate the influence of anisotropy on formability and also to obtain guidelines for the stamping process design in friction stir welded TWB (tailor welded blank), the aluminum ally 6111-T4 sheet was welded with three different types of combination: RD||RD, TD||RD and TD||TD (Here, RD and TD mean the rolling direction and transverse direction, respectively) and then hemisphere dome stretching and cylindrical cup drawing tests were carried out. In addition, the numerical analysis was performed to confirm the validity of experimental results. For the numerical analysis, the non-quadratic orthotropic yield function, Yld2004-18p was utilized to represent precise anisotropic properties.

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