Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Microstructure and Mechanical Properties of P Added 0.15C-1.5Mn-1.5Al TRIP Aided Cold Rolled Steel

P 첨가 0.15C-1.5Mn-1.5Al TRIP형 냉연강판의 미세조직과 기계적 성질

  • 안만욱 (부산대학교 재료공학과) ;
  • 조경목 (부산대학교 재료공학과) ;
  • 서동우 (한국기계연구원 환경재료연구센터) ;
  • 오창석 (한국기계연구원 환경재료연구센터) ;
  • 김성준 (한국기계연구원 환경재료연구센터)
  • Published : 2005.11.01
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Abstract

Microstructure and mechanical properties are investigated for 0.15C-1.5Mn-1.5Al TRIP aided cold rolled steels containing $0.05wt\%P$ and $0.1wt\%P$. Despite of the complete replacement of Si by Al, the TRIP steel shows tensile strength of 700MPa and total elongation of $35\%$ by addition of $0.1wt\%$ P. Tensile strength of P added TRIP steels is not only affected by the solid solution hardening but also the volume fraction of retained austenite. As P content increases from $0.05wt\%$ to $0.1wt\%$, tensile strength and volume fraction of retained austenite are increased, but elongation is decreased. The lower stability of austenite in $0.1wt\%$ P added steel is responsible for the decrease of the elongation.

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References

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