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http://dx.doi.org/10.5228/KSPP.2005.14.8.712

Microstructure and Mechanical Properties of P Added 0.15C-1.5Mn-1.5Al TRIP Aided Cold Rolled Steel  

Ahn M. W. (부산대학교 재료공학과)
Cho K. M. (부산대학교 재료공학과)
Suh D. W. (한국기계연구원 환경재료연구센터)
Oh C. S. (한국기계연구원 환경재료연구센터)
Kim S. J. (한국기계연구원 환경재료연구센터)
Publication Information
Transactions of Materials Processing / v.14, no.8, 2005 , pp. 712-717 More about this Journal
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.
Keywords
TRIP Aided Steel; P Addition; Strength; Retained Austenite; Microstructure;
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