7050-H112铝合金的高温流变行为和动态再结晶  

Hot Deformation Behavior and Dynamic Recrystallization of 7050-H112 Aluminium Alloy

作　　者：贾耀军[1] 周杰[1] 董旭刚[1] 王文浩[1] 高林 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [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》2012年第4期8-10,共3页Hot Working Technology

基　　金：科技部国家重大专项项目(G09003.8)

摘　　要：采用Gleeble-1500D热模拟试验研究了7050-H112铝合金在变形温度为300、350、400、450℃,变形程度60%,应变速率为0.01、0.1、1、10s-1时的高温流变和动态再结晶行为,建立了7050-H112铝合金在高温条件下的流变应力本构方程和动态再结晶运动学模型,为后续的热加工工艺制定和有限元模拟分析提供理论依据。The hot deformation behavior and dynamic recrystallization of 7050-H112 aluminium alloy was investigated using the Gleeble-1500D thermal/mechanical simulation testing machine under the deformation of 60%,the strain rate of0.01s-1,0.1s-1,1s-1 and 10s-1 at the temperature of 300℃,350℃,400℃ and 450℃.The flow constitutive equation under high temperature and the dynamic recrystallization kinematics model were built,which can provide the theoretical basis for subsequent thermal processing and finite element analysis.

关 键 词：7050-H112 流变应力 本构方程 动态再结晶 

分 类 号：TG146.2[一般工业技术—材料科学与工程]