铸造技术2017，Vol.38Issue(6)：1278-1282,5.DOI:10.16410/j.issn1000-8365.2017.06.006
FGH4096-GH4133B双合金高温变形的本构关系
Constitutive Relationship of FGH4096-GH4133B Dual Alloys in Hot Deformation
摘要
Abstract
The dual superalloys FGH4096-GH4133B were joined by the electron beam welding.Isothermal compression tests were carried out on electron beam weldments of FGH4096-GH4133B alloys by Gleeble-1500D simulation at the temperatures of 1 020～1 140 ℃ and the strain rates of 0.001～1.0 s-1.The deformation behavior and flow stress under the different temperatures and strain rates were analyzed.The result shows that the flow stress is influenced strikingly by both deforming temperature and strain rate.The flow stress decreases with the increase of deforming temperature and the decrease of strain rate.After work hardening of the rising stage,the flow stresses achieve stability stage of hardening and softening equilibrium.The stress exponential n and deformation activation energy Q are obtained on the base of the hyperbolic sin constitutive equations,which are 4.43 and 340.908 kJ/mol,respectively.The corresponding constitutive equation of thermal deformation was estabhshed.关键词
FGH4096-GH4133B双合金/热模拟压缩/应力应变/本构方程Key words
FGH4096-GH4133B dual superalloys/hot compression deformation/flow stress and strain/constitutive equation分类
金属材料引用本文复制引用
郭艳丽,王香耿,姚泽坤,郭鸿镇,宁永权..FGH4096-GH4133B双合金高温变形的本构关系[J].铸造技术,2017,38(6):1278-1282,5.基金项目
国家自然科学基金资助项目(51101119) （51101119）
中国博士后科学基金资助项目(2015M570851) （2015M570851）
陕西省自然基金资助项目(2016JQ5039) （2016JQ5039）
中央高校基础科研业务费资助项目(3102016ZY012) （3102016ZY012）
