00Cr22Ni5Mo3N双相不锈钢的高温软化机理  

Hot Deformation Behavior of 00Cr22Ni5Mo3N Duplex Stainless Steel

作　　者：赵科巍[1] 马勤[1,2] 张红霞[1] 王佳[1] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,兰州730050 [2]兰州理工大学有色金属合金省部共建教育部重点实验室,兰州730050

出　　处：《有色金属》2011年第2期68-71,共4页Nonferrous Metals

基　　金：兰州理工大学特色研究方向梯队资助项目(T200304))

摘　　要：采用热/力模拟实验方法对热轧态00Cr22Ni5Mo3N双相不锈钢(DSS)进行低应变高温平面变形试验。结果表明,在应变速率分别为0.1s-1和2s-1,变形温度900～1200℃条件下,双相不锈钢的峰值变形抗力随变形温度升高而降低,随应变速率的增大而增加,在各变形温度下,其差值达到30～80MPa。在1000～1200℃变形温度区间,铁素体组织发生完全的动态回复以及再结晶软化,部分奥氏体主要通过孪生变形及亚晶的形成进行软化。The hot deformation behavior of hot-rolled 00Cr22Ni5Mo3N duplex stainless steel（DSS） is investigated by the use of thermo-mechanical simulator etc.Test results show that with strain rate 0.1s-1 and 2s-1 at 900（1200℃,the peak resistance to deformation of the dual phase steel is abruptly decreased with the increase of the deformation temperature and as the stain rate is increased from 0.1s-1 to 2s-1,the peak stress of dual phase steel is increased by 30～80MPa.With deformation at 1000（1200℃,the recovery and recrystallization of ferrite structure in steel occur where austenite is partially softened by deformation twin and formation of subgrain.

关 键 词：金属材料 00Cr22Ni5Mo3N双相不锈钢 峰值变形抗力 动态回复及再结晶 孪生变形 

分 类 号：TG142.71[一般工业技术—材料科学与工程] TG113.12[金属学及工艺—金属材料]