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

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지

Hole Flangeability and Fracture Behaviors of Circular Flanges of High Strength Hot Rolled Steels

고강도 열연재의 Hole Flanging시 성형특성과 파단에 관한 연구

  • 김정운 (부산대학교 정밀기계공학과) ;
  • 공성락 (부산대학교 정밀기계공학과) ;
  • 김봉준 (부산대학교 정밀기계공학과) ;
  • 문영훈 (부산대학교 정밀기계공학과)
  • Published : 2000.10.01
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Abstract

The hole flanging experiments are performed on a flat circular plates with a hole in the center and the flangeability and fracture behavior of TRIP steel and ferrite-bainite duplex steel were examined. Over the ranges of conditions investigated, the flangeability of ferrite-bainite duplex steel is better than TRIP steel and the term 'hole flanging capacity' introduced in this study. Fracture behavior of TRIP steel and ferrite-bainite duplex steel was characterized by petal formation at the edge of flange. In case of crack propagation, crack tip diversion that is supposed to be responsible for flangeability occurs more severely on HSLA Steel.

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