00Cr25Ni7Mo4N超级双相不锈钢的热变形行为  

HOT DEFORMATION BEHAVIOR OF 00Cr25Ni7Mo4N SUPER DUPLEX STAINLESS STEEL

作　　者：谢世敬[1,2] 周灿栋[2] 郑少波[1] 宋洪伟[2] 俞敏[3] 

机构地区：[1]上海大学材料学院,上海200072 [2]宝山钢铁股份有限公司技术中心前沿技术研究所 [3]宝山钢铁股份有限公司不锈钢分公司

出　　处：《上海金属》2008年第6期4-9,共6页Shanghai Metals

摘　　要：采用Gleeble．3800热模拟机研究了铸态00Cr25Ni7Mo4N双相不锈钢在应变速率为0．1s^-1。10s^-1，变形温度为1000，1200℃下的热变形行为，分析了流变应力与应变速率以及变形温度之间的关系。结果发现在同一应变速率下随温度的升高峰值应力值σp。减小；在同一温度下随着应变速率的减小峰值应力值σp也减小，并获得了在热变形条件下该双相不锈钢的热变形方程以及其它热变形参数，计算出该双相不锈钢的热变形激活能为433kJ／mol。The high temperature deformation behavior of 00Cr25Ni7Mo4N duplex stainless steel was performed on Gleeble-3800 hot simulator with the strain rates 0.1 - 10s^-1, the deformation temperatures 1000 - 1200℃. The relationship between flow stress and strain rates, as well as the deformation temperature was analyzed. The peak stress σp value decreased with the increasing of deformation temperature at the same strain rate. The hot deformation equation and deformation parameters of the duplex stainless steel were obtained, and the deformation activation energy was 433kJ/mol.

关 键 词：双相不锈钢 热变形模拟 动态再结晶 热变形激活能 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TQ051[金属学及工艺—金属材料]