连铸过程铸坯应变对碳氮化铌析出行为的影响  

Effect of slab strain on Nb(C,N) precipitation in continuous casting process

作　　者：朱正海[1] 仇圣桃[1] 李广敏[1] 廖鹏[1,2] 夏文勇[2] 

机构地区：[1]钢铁研究总院连铸中心,北京100081 [2]新余钢铁有限责任公司炼钢厂,江西新余338001

出　　处：《炼钢》2009年第6期53-55,共3页Steelmaking

摘　　要：通过应变诱导析出模型分析了连铸过程铸坯应变对碳氮化铌析出的影响,结果表明:拉速的改变对碳氮化铌的最快析出时间具有一定的影响,在同样的应变及应变温度下,拉速越快碳氮化铌最快析出时间越短;在连铸过程的矫直段及弯曲段,由于铸坯应变及应变速率较小,在研究连铸过程碳氮化铌析出行为时铸坯应变对碳氮化铌析出行为的影响可以忽略。The effect of slab strain on Nb（C,N） precipitation in the continuous casting is analyzed by a strain-induced precipitation model. The results show that change of the drawing speed may affect the minimal Nb（C, N） precipitation time to some extent and under the conditions of the similar strain and strain temperature the quicker the drawing speed is, the shorter the duration of the quickest precipitation time of Nb（C,N） will become. In the bending zone and leveling zone the effect of change of slab strain on the Nb （C,N） precipitation behavior can be ignored in the process of Nb（C,N） precipitation in continuous casting due to less strain and strain rate of the slab.

关 键 词：应变诱导析出 铸坯 矫直 应变速率 

分 类 号：TF777.1[冶金工程—钢铁冶金]