Microstructure and Texture Evolution of Fe-Mn-C Steel during Annealing
Microstructure and texture evolution of Fe-22.3Mn-0.3C alloy during annealing at temperatures from 50 to 850℃ was studied by optical microscope,EBSD measurement,microhardness test and X-ray diffraction.The results show that,ε-martensite transformation,deformation twinning and shear banding occurred in Fe-22.3Mn-0.3C alloy after 60% cold rolling.Microstructure and texture changed when the alloy was annealed at different temperatures.Below 300℃,austenite transformed to ε-martensite; above 350℃,ε-M reversely transformed to austenite without new austenite grains formation; above 550℃ recrystallization started and grains grew up as temperature increased.The texture of the cold-rolled sheet consisted of Copper,γ-fiber (<111>//ND),Goss,Brass and S component.After annealing below 500℃,the texture components basically unchanged,but the texture intensity increased slightly.Annealed above 550℃,the texture intensity decreased with γ-fiber disappearance and Copper enhancement due to recrystallization.After full recrystallization,only weak α-fiber and Copper component were observed.
Fe-Mn-C steel ε-martensite transfromation annealing recrystallization texture
WANG Baochuan LI Tao ZHAO Yi HAN Nidan YAO Ye YANG Jianwei
Shougang Research Institute of Technology, Beijing 100043, China
国际会议
成都
英文
190-194
2016-11-16（万方平台首次上网日期，不代表论文的发表时间）