Microstures Evolution and Mechanical Properties of Hot-rolled Fe-Mn-Nb-V-Ti Steel
In the present work,the microstructures and mechanical properties of hot-rolled 0.06V-0.02Nb-0.07Ti (wt%) (Nb-V-Ti-steel) transformation induced plasticity (TRIP) steels were studied.An optimized quenching at intercritical temperature and tempering at 200℃ adopted on the as-hot-rolled steel led to a ferrite-austenite mixed microstructure that was characterized by excellent combination of tensile strength of 875MPa and elongation of 43%.It is found that the strain stress are determined by the quenching temperature,the feature of austenite was descided by heat treatment process.It is concluded that precipitation strengthening mechanism induced by (Nb-V-Ti)C/N precipitation is the dominant factor for the changes of strength.
microstructure mechanical stability TRIP effect Nb-V-Ti
YU Haicun ZHU Miaoyong
School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China
国际会议
成都
英文
434-437
2016-11-16（万方平台首次上网日期，不代表论文的发表时间）