X120管线钢形变奥氏体的静态再结晶行为  

Static Recrystallization Behavior of Deformed Austenite in X120 Pipeline Steel

作　　者：高建忠[1] 郭斌[1,2] 徐进桥[2] 郭爱民[1,2] 王青峰[1] 

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004 [2]武汉钢铁(集团)公司武钢研究院,湖北武汉430080

出　　处：《钢铁》2012年第8期62-64,73,共4页Iron and Steel

基　　金：国家高技术研究发展计划(863)资助项目(2007AA03Z509)

摘　　要：通过在Gleeble-3500热模拟试验机上进行的两道次热压缩变形试验,对含铌微合金管线钢的静态软化行为进行了研究。采用应力补偿法计算了不同变形温度下的静态再结晶百分数。变形温度和弛豫时间对X120钢的静态再结晶影响很大。根据试验数据和静态再结晶动力学方程,计算出X120管线钢静态再结晶激活能为401.56kJ.mol-1。绘制了试验钢的析出动力学(PTT)曲线。Static recrystallization behavior of microlloyed pipeline steel with Nb was investigated by two-pass uniaxial hot compression tests performed on Gleeble-3500 thermo-mechanical simulator.The static recrystallization fraction under different deformed temperatures was estimated by means of compensating.The results show that the effect of deformation temperature and inter-pass time on static recrystallization behavior is significant.The activation energy of static recrystallization of the X120 pipeline steel is 401.56 kJ/mol.The precipitation-time-temperature curve of the X120 pipeline steel is also obtained.

关 键 词：X120 管线钢 静态再结晶 析出动力学曲线 

分 类 号：TG142.25[一般工业技术—材料科学与工程]