再结晶阶段加热速度对低碳冷轧板罩式退火过程组织和织构的影响  

Effect of Recrystallization Stage Heating Rate on Microstructure and Texture of Low-Carbon Cold-Rolled Plate During Batch Annealing Process

作　　者：孙开宇[1,2] 金自力[1] 任慧平 鞠芳[1,2] 刘新华[1,2] 瞿伟[1,2] 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]内蒙古自治区白云鄂博矿多金属资源综合利用重点实验室,内蒙古包头014010

出　　处：《钢铁研究学报》2014年第6期43-46,53,共5页Journal of Iron and Steel Research

基　　金：国家自然科学基金资助项目(50761005);内蒙古自然科学基金资助项目(20080404Zd18)

摘　　要：在实验室条件下模拟CSP热轧板为基板生产的低碳冷轧板罩式退火过程,研究再结晶阶段加热速度对冷轧板罩式退火过程组织和织构的影响。结果表明,压下率83.3%的冷轧板,随着再结晶阶段加热速度的增加,会使试样再结晶温度降低,再结晶过程提前完成,{001}〈110〉织构变强,{111}〈110〉织构先减少后增加,{111}〈112〉织构先减少后增加出现峰值,当加热速度超过50℃/h时又减小。在加热速度30~40℃/h间变形织构{112}〈110〉有较低的密度值。再结晶阶段加热速度40℃/h的退火工艺成品组织为饼形晶粒,{001}〈110〉织构密度较低,{111}〈110〉和{111}〈112〉密度较强,密度值接近。Under the laboratory condition,the batch annealing process of low carbon cold rolled sheet production by CSP hot plate as the substrate was simulated,the effect of recrystallization stage heating rate on microstructure and texture of cold rolled plate during batch annealing process was investigated.The results show that cold rolled sheet with reduction rate 83.3%,as the heating rate increasing in recrystallization stage,recrystallization temperature of the sample is reduced,the recrystallization process is finished ahead of schedule,{001}＆lt;110＆gt;texture gets strong,{111}＆lt;110＆gt;texture declines and then climbs up,{111}＆lt;112＆gt;texture declines and then climbs up as peak,when the heating rate is more than 50℃/h,the texture is reduced.The heating rate is range from 30to 40℃/h with a lower density of the deformation texture{112}＆lt;110＆gt;.Recrystallization stage heating rate is 40℃/h,the microstructure of finished sample is pie grain during annealing process,{001}＆lt;110＆gt;texture is lower density,the denser of texture{111}＆lt;110＆gt;and{111}＆lt;112＆gt;is strong and their density values are close.

关 键 词：低碳钢冷轧板 再结晶 组织 织构 

分 类 号：TG156.2[金属学及工艺—热处理]