Study on hot deformation behavior of Hastelly C276 superalloy
(0) Hot-tensile behavior of C276 superalloy was studied in the deformation temperature range of 650~750 ℃ with the strain rate range of 0.35~35mm/s.The results show that deformation temperature and strain rate both have significant influence on the flow stress.The flow stress decreases with the increase of deformation temperature,while increases with the increase of strain rate.The deformation mechanism of C276 superalloy exhibit dynamic recovery feature in the case of deformation temperature 700 ℃.However,when the deformation temperature increases to 750 ℃,dynamic recrystallization behavior may be occurred.The flow stress of C276 alloy during hot deformation process can be characterized by Zener-Hollomon parameter including the Arrhenius term and the deformation activation energy was 327.66KJ/mol.Therefore,a scientific basis is provided for the reasonable choice of processing parameters of C276 superalloy.
C276 superalloy hot tension deformation flow stress constitutive equation
Lu Yanling Liu Jinxi Li Xiaoke Li Zhijun Wu Guanyuan Zhou Xingtai
Department of Nuclear Materials Science and Engineering, Shanghai Institute of Applied Physics, Chin Department of Nuclear Materials Science and Engineering, Shanghai Institute of Applied Physics, Chin
国际会议
上海
英文
289-289
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）