一种核岛用钢P280GH热变形行为  

Hot deformation behavior of nuclear island steel P280GH

作　　者：于辉[1] 郭元蓉 王秀琳[1] 刘利刚[1] 冯庆 胡铂 

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]攀钢集团成都钢钒有限公司,四川成都610303

出　　处：《钢铁》2015年第1期50-54,共5页Iron and Steel

基　　金：国家自然科学基金资助项目(51275445);河北省自然科学基金钢铁联合基金资助项目(E2014203077)

摘　　要：利用Gleeble-3500热力模拟试验机在800-1100℃，应变速率为0．01~10S^-1的条件下对一种核岛用钢P280GH进行了热压缩变形实验，测定了真应力．真应变曲线，对变形组织进行了系统分析，计算得到了该材料的热变形激活能数值，揭示了其不适合进行再结晶轧制的原因，并建立了该材料的本构方程，为进一步优化轧制工艺和产品性能控制提供理论依据。The hot deformation behavior of a kind of nuclear island steel P280GH has been investigated through uniaxial compression on Gleeble-3500 thermal-mechanical simulator within the temperature range of 800-- 1 100 ℃, and the strain rate range of 0.01 -- 10 s^-1.The corresponding flow curves and microstructures have been determined and analyzed, respec- tively. The apparent activation energy was obtained, which can be used to explain the reason why the steel present was not suitable for recrystallization rolling. Furthermore, the constitutive equation was eatablished, which provides theoretical ba- sis for the researches of rolling process optimization and properties control.

关 键 词：核岛用钢 热变形 动态再结晶 应力 应变 

分 类 号：TG142.1[一般工业技术—材料科学与工程]