北京科技大学学报Issue(6)：740-745,6.
退火后冷却方式对冷轧中锰钢微观组织和力学性能的影响
Effect of cooling methods after annealing on the microstructure and mechanical properties of cold-rolled medium manganese steel
摘要
Abstract
Cold-rolled low-carbon medium-manganese steel (0.2C-5Mn) was cooled by different methods after annealing. Its microstructure and tensile properties were investigated by means of tensile testing, scanning electron microscopy (SEM), electron back scattered diffraction (EBSD), transmission electron microscopy (TEM), and X-ray diffraction. Intercritical annealing after cold rolling results in a duplex structure of ultrafine ferrite and reverted austenite. Reverted austenite in the steel experienced annealing and air cooling is more stable and its volume fraction is significantly higher than that in the steel treated by annealing and furnace cooling. In addition, reverted austenite in the steel experienced annealing and air cooling can produce sustained TRIP effect during deformation, leading to improvements in strength and plasticity. The product of tensile strength and total elongation exceeds 26.5 GPa·%.关键词
汽车材料/锰钢/冷乳/退火/冷却/微观组织/力学性Key words
automobile materials/manganese steel/cold rolling/annealing/cooling/microstructure/mechanical分类
矿业与冶金引用本文复制引用
曹佳丽,赵爱民,陈银莉,程俊业,蒯振..退火后冷却方式对冷轧中锰钢微观组织和力学性能的影响[J].北京科技大学学报,2013,(6):740-745,6.基金项目
高等学校博士学科点专项科研基金资助项目（20110006110007) （）
