3Mn-0.2C中锰钢形变诱导铁素体动态相变机理

孙毅, 郑沁园, 胡宝佳, 王平, 郑成武, 李殿中

Mechanism of Dynamic Strain-Induced Ferrite Transformation in a 3Mn-0.2C Medium Mn Steel

SUN Yi, ZHENG Qinyuan, HU Baojia, WANG Ping, ZHENG Chengwu, LI Dianzhong

图2 3Mn-0.2C MMS在660℃、0.001 s-1条件下变形的真应力-真应变曲线及不同应变时微观组织的EBSD像

Fig.2 True stress-true strain curve of the 3Mn-0.2C MMS (a) and corresponding EBSD maps at strains of ε = 0.22 (b), 0.51 (c), and 0.92 (d) at temperature of T = 660oC and strain rate of ε˙ = 0.001 s-1 (The green and blue lines in Figs.2b~d represent boundaries with 2° ≤ θ < 15° and θ ≥ 15°, respectively. θ is misorientation angle of the boundary. M—martensite, α—ferrite)