03Cr19Mn12Ni3CuN节镍型奥氏体不锈钢热变形行为与组织演变  

Hot deformation behavior and microstructure evolution of nickel-saving stainless steel 03Cr19Mn12Ni3CuN

作　　者：邓越 陈旭[1] 王治宇[1] DENG Yue;CHEN Xu;WANG Zhiyu(Research Institute,Baoshan Iron&Steel Co.,Ltd.,Shanghai 201999,China)

机构地区：[1]宝山钢铁股份有限公司中央研究院,上海201999

出　　处：《宝钢技术》2024年第5期8-14,共7页Baosteel Technology

摘　　要：对03Cr19Mn12Ni3CuN不锈钢(BN3E钢)进行单道次热压缩试验,研究其在温度范围950~1200℃、应变速率为0.1~50 s^(-1)下的热变形行为。根据试验数据计算建立了BN3E钢的流变应力本构关系及热加工图,同时分析了热变形过程中的微观组织变化。结果表明:BN3E钢热变形激活能为302.92 kJ/mol;低应变速率下以动态回复软化机制为主,高应变速率下以动态再结晶软化机制为主;BN3E钢在1125~1200℃温度区间和0.1~1 s^(-1)应变速率区间热加工性能最优。The hot deformation behavior of 03Cr19Mn12Ni3CuN stainless steel(BN3E steel)was investigated by single pass hot compression experiment at a temperature range of 950℃to 1200℃under strain rates of 0.1 s^(-1)to 50 s^(-1).Based on the experimental data,the flow stress constitutive equation and the hot processing map of BN3E steel were calculated and the microstructure evolution during hot deformation was also analyzed.The results show that the hot deformation activation energy of BN3E steel is 302.92 kJ/mol,and it is mainly softened by dynamic recovery softening mechanism at a low strain rate and dynamic recrystallization at a high strain rate.The ideal temperature range for hot working of BN3E steel is determined to be between 1125℃and 1200℃,with the strain rate optimally set between 0.1 s^(-1)and 1 s^(-1).

关 键 词：节镍型奥氏体不锈钢 03Cr19Mn12Ni3CuN 热变形 热加工图 组织演变 

分 类 号：TG142.71[一般工业技术—材料科学与工程]