保温对低碳钢形变诱导相变组织的影响  

Influence of Holding Time on Microstructure of Strain Induced Transformation in Low Carbon Steel

作　　者：刘翠琴[1] 李维娟[1] 王国栋[2] 刘相华[2] 

机构地区：[1]鞍山科技大学材料科学与工程学院,辽宁鞍山114002 [2]东北大学轧制及连轧自动化国家重点实验室,辽宁沈阳110006

出　　处：《热加工工艺》2003年第3期3-5,共3页Hot Working Technology

摘　　要：通过热模拟实验 ,考察了不同变形温度和不同奥氏体晶粒尺寸等条件下保温对低碳钢形变后组织演变的影响。结果表明 ,在较低的温度下变形得到的铁素体在保温时更稳定 ,随温度升高 ,易发生铁素体向奥氏体的逆相变。细晶奥氏体转变后的铁素体在保温时长大缓慢 ,所得组织稳定 。The influence of the holding time in different conditions of deforming temperature as well as primal austenite grain sizes on the microstructure of transformation were investigated. The results suggested that ferrite grains obtained at lower deforming temperature were more stable during holding, the reverse transformation from ferrite to austenite tended to happen at a higher temperature. Ferrite transformed from finer austenite grains grew not as distinctly as those from coarser austenite grains, and the microstructure were more homogenous after holding for some time.

关 键 词：低碳钢 形变诱导相变 保温 逆相变 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG335[金属学及工艺—金属材料]