Deformation behaviour of GH4169 nickel based superalloy in isothermal compression

作者：Li M Q^*; Ju W B; Lin Y Y; Wang X J; Niu Y

来源：Materials Science and Technology, 2008, 24(10): 1195-1198.

DOI：10.1179/174328406X148769

• Superalloy
• High temperature deformation
• Isothermal compression
• Constitutive equation

Isothermal compression of the GH4169 nickel based superalloy was carried out at a Thermecmaster-Z simulator at deformation temperatures of 930-1050 degrees C at intervals of 20 degrees C, strain rate of 0.1-50.0 s(-1) and maximum height reduction of 60.0%. The deformation behaviour of the GH4169 superalloy in isothermal compression was characterised based on the stress-strain behaviour analysis. Constitutive equations described the flow stress as a function of strain rate, strain and deformation temperature were proposed for the isothermal compression of the GH4169 superalloy and a close agreement between the calculated and experimental stress-strain curves is achieved.

• 出版日期2008-10
• 单位西北工业大学