Deformation Behavior of Fe12Mn0.6C and Fe12Mn0.6C-1.5Al TWIP Steel
The high production costs of current TWIP steel designs are partly related to their high Mn content.This makes the manufacturing and the commercialization of TWIP steel challenging.It is therefore essential to analyze the performance of 12% Mn TWIP steel to study the potential of TWIP steel with a reduced content of Mn.12% Mn TWIP steels demonstrate a good combination of high strength and ductility due to their high work hardening rate during deformation.Al-additions lead to a considerable increase of the total elongation.In order to understand the deformation behavior of Fe12Mn0.6C and Fe12Mn0.6C-1.5Al TWIP steels,their microstructural evolution and work hardening behavior in uni-axial tension were compared.Fe12Mn0.6C TWIP steel,which has lower stacking fault energy than Fe12Mn0.6C-1.5Al TWIP steel,exhibited strain-induced martensitic transformation.The contribution will focus on the fact that the formation of strain-induced martensite appears to contribute to the flow stress despite the small volume fraction of martensite involved.The interaction between slip and deformation twinning remains the most important mechanism of strain hardening during the deformation of Fe12Mn0.6C-1.5Al TWIP steel.
TWIP Deformation twinning Strain-induced martensitic transformation EBSD TEM
KIM Jinkyung LEE Seok-Jae KIM Sung-Kyu DE COOMAN Bruno C
Graduate Institute of Ferrous Technology,Pohang University of Science and Technology,Pohang 790-784, POSCO Technical Research Laboratories,Gwangyang,South Korea
国际会议
Asia Steel International conference 2012(第五届亚洲钢铁大会)
北京
英文
1-5
2012-09-23（万方平台首次上网日期，不代表论文的发表时间）