中压转子用钢Cr12高温变形动态软化研究  

Study on High Temperature Deformation and Dynamic Softening of Cr12 Steel for Medium-pressure Rotor

作　　者：石静[1] 阳鹤[2] 杨运民[1,2] 袁国栋[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400030 [2]中国第二重型机械集团公司,四川德阳618013

出　　处：《热加工工艺》2011年第18期57-59,共3页Hot Working Technology

摘　　要：通过TMTS热模拟试验机对中压转子材料Cr12合金钢进行了实验,研究了Cr12合金钢在温度900～1150℃、变形速度0.001～10 s-1变形条件下的高温变形行为。建立了该钢的热变形方程和发生动态再结晶的临界条件,为有限元数值模拟该钢的热成形过程提供了基本数据,也为热成形力学参数和加热温度的合理确定提供了科学依据。TMTS thermal simulation machine was used to conduct the experiment of Cr12 steel.High-temperature deformation behavior of Cr12 steel was studied in the temperature of 900 ℃～1150 ℃ and deformation rate of 0.001 s-1～10s-1.Afterwards,the thermal deformation equation and boundary condition of dynamic recrystallization of Cr12 were established,which provided basic data for the hot forming simulation of Cr12.Furthermore,it also offered scientific proof for the reasonable confirmation of hot forming force parameters and heating temperature.

关 键 词：中压转子 热变形 流动应力 动态再结晶 

分 类 号：TG144[一般工业技术—材料科学与工程]