高氮微合金钒钢在贝氏体区等温析出行为  

Precipitating behavior in bainite region of vanadium containing high nitrogen microalloyed steel

作　　者：金光秀[1] 高彩茹[1] 杨雄飞 杜林秀[1] 崔辰硕 陈宇轩[1] 

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819 [2]攀枝花钢铁研究院总公司,四川成都617000

出　　处：《材料热处理学报》2016年第2期135-140,共6页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(50834010);国家"863"计划课题(2015AA030401)

摘　　要：通过热模拟实验,就高氮微合金钒钢在贝氏体区的析出行为进行了研究。给出了析出量的定量分析结果为：在450~550℃区间保温,贝氏体中析出物平均粒径4.5 nm,析出的粒子长大趋势不明显,开始析出时间（5%体积分数）分别为630、574、409 s;保温时间6000 s时,最大析出量能够达到理论析出量的16%。Precipitating behavior in bainite region in a vanadium containing high nitrogen microalloyed steel was quantitatively studied through the thermal simulation experiments. The resuh shows that the average particle diameter that precipitates from bainite is 4.5 nm in the holding temperature range of 450-550 ℃ , where there is no significant trend for particle coarsening. The start time for precipitation （5% volume fraction） is 630,574,409 s, respectively. When the holding time is 6000 s, the maximum volume fraction of precipitation can reach 16% of the theoretical value.

关 键 词：高氮钢 微合金钒钢 贝氏体 析出行为 

分 类 号：TG113.12[金属学及工艺—物理冶金]