Thermal Deformation Behavior and Constitutive Equation of Highly Alloyed Superalloy Udimet720Li
Hot compressive deformation of Udimet720Li alloy was carried out on Gleeble-3500 thermal mechanical simulator.The flow stress behavior of Udimet720Li alloy during hot compression was studied in the temperature range of 1100-1160 ℃ and at a strain rate of 0.001-1s -1.The results showed that the flow stress was controlled by both strain rate and deforming temperature.The flow stress decreased with the increase of deforming temperature,while increased with the increase of strain rate.The change of flow stress with deformation thermal parameters was revealed from true stress-true strain curves,and constitutive relationship of Udimet720Li alloy was obtained on the base of Arrhenius equations and the deformation activation energy was calculated.
Udimet 720Li alloy:Isothermal compression:Deformation behavior:Constitutive equation:Deformation activation energy
Tao Wang Shuhong Fu Zhao Li Yong Zhang Yuxin Zhao Ling Guo
Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
703-708
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）