C-Si-Mn系双相钢锰配分行为及其对组织性能的影响  

Mn Partitioning Behavior and Its Effect on Structure and Mechanical Property of C-Si-Mn Dual-Phase Steel

作　　者：陈连生[1] 张健杨 田亚强[1] 宋进英[1] 魏英立[1] 赵远[1] 

机构地区：[1]河北联合大学河北省现代冶金技术重点实验室,河北唐山063009

出　　处：《钢铁研究学报》2014年第5期72-76,共5页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(51254004);河北省自然科学基金资助项目(E2014209191)

摘　　要：采用场发扫描电镜和EPMA电子探针研究了C-Si-Mn系双相钢锰配分行为及其对马氏体形貌、体积分数和力学性能的影响。结果表明:试验用钢0.20C-1.28Mn-0.37Si在经双相区热处理后,在720℃的淬火温度下,随着保温时间的延长,锰元素由铁素体向奥氏体中的配分量不断增加,达到化学势平衡(即饱和状态)所需的保温时间为1500s;马氏体体积分数随着保温时间的延长而增加,达到饱和的时间是1300s;抗拉强度随着保温时间的延长而升高,当达到某一时间时,抗拉强度保持恒定。Effect of Mn partitioning behavior on martensite morphology, volume fraction and mechanical property of C-Si-Mn dual phase steel was investigated by means of SEM and EPMA electron microprobe. The results show that with increase of the annealing time, the content of Mn element of the experimental steel 0.20C-1.28Mn- 0.37Si partitions from ferrite to austenite is increasing in quenching temperature about 720 ℃ after heat treatment in dual phase region, The holding time required for 1500 s when reached chemical potential equilibrium （satura- tion） ; with the annealing time the volume fraction of martensite is increasing, the saturation time of volume frac- tion was 1300 s; with the holding time the tensile strength is increasing, and when it reached a certain time, the tensile strength remains constant.

关 键 词：低碳硅锰系 冷轧双相钢 锰配分 组织 力学性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程]