21%Cr铁素体不锈钢成型性能和表面起皱研究  

Study on the Formability and Surface Ridging of a 21%Cr Ferritic Stainless Steel

作　　者：张驰[1] 刘振宇[1] 董文卜[2] 王国栋[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]宝钢集团有限公司研究院,上海201900

出　　处：《东北大学学报（自然科学版）》2011年第2期227-231,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50734002,51004035)

摘　　要：以21%Cr铁素体不锈钢为研究对象,研究了热轧退火及冷轧润滑对带钢中织构和晶粒簇的影响.结果表明:热轧退火再结晶不完全时,成品带钢中心处的晶粒簇明显,且带钢厚度方向上织构梯度很大,使得带钢在成型过程中表面起皱和各向异性明显;冷轧过程不进行润滑时,与采用冷轧润滑的成品带钢相比,带钢厚度方向上的织构梯度增加,γ纤维织构的强度降低,使得带钢的成型性能恶化;当热轧退火使带钢发生完全再结晶,并在冷轧过程中进行充分润滑时,则可使成品带钢同时获得较好的成型性能和抗表面起皱性能.The effects of annealing after hot rolling and lubrication during cold rolling on the texture and grain colonies of a 21%Cr ferritic stainless steel were investigated.The results revealed that the grain colonies are obvious at the central layer of the final sheet with incomplete recrystallization during hot rolling and annealing,which having the high through-thickness texture gradient,thus causing the severe surface ridging and planar anisotropy in its forming process.And the through-thickness texture gradient became higher with lower intensity of γ-fiber texture in the final sheet if no lubrication was done during cold rolling in comparison to the sheet which was cold rolled with lubrication,thus causing the deterioration of the formability of the sheet.The way to make the formability better and the surface ridging resistance higher simultaneously is to ensure the complete recrystallization through proper annealing after hot rolling and the full lubrication during cold rolling.

关 键 词：铁素体不锈钢 成型性能 表面起皱 晶粒簇 织构梯度 

分 类 号：TG142[一般工业技术—材料科学与工程]