喷射成形FGH4095的热变形特征  

Hot deformation behavior of spray formed FGH4095

作　　者：张宇[1] 葛昌纯[1] 郭彪[1] 沈卫平[1] 

机构地区：[1]北京科技大学材料科学与工程学院特种陶瓷粉末冶金研究所,北京100083

出　　处：《物理学报》2012年第21期484-490,共7页Acta Physica Sinica

基　　金：国家高技术研究发展计划(批准号:2007AA03Z502)资助的课题~~

摘　　要：研究了喷射成形高温合金FGH4095在温度为1010—1140℃、应变速率为0.001—10.0s^(-1)下的热变形行为,并使用双曲正弦模型建立了喷射成形FGH4095的本构方程.结果表明:本构方程预测结果与实验值符合较好,为喷射成形FGH4095热加工过程的数值模拟提供了较准确的模型.For the numerical simulation of hot working process of spray-formed FGH4095, the high temperature deformation behavior of spray-formed FGH4095 is studied at different deformation temperatures （1010-1140 ℃） and different strain rates （0.001-10.0 s-1） using Gleeble 3800 thermal simulator. The constitutive equation is established with the sinh model. The calculative results are consistent with the experimental data. It indicates that the accurate material model is provided for the numerical simulation for hot working process of spray-formed FGH4095.

关 键 词：喷射成形 高温合金 本构方程 

分 类 号：TF124.3[冶金工程—粉末冶金]