Hot Deformation Behavior and Constitutive Model of 2060-T8E30 Al-Li Alloy [2060-T8E30铝锂合金的热变形行为及本构模型]

作者：Yu Y.; Chen L.; Xu Y.; Yuan Y.

来源：Rare Metal Materials and Engineering, 2021, 50(12): 4388-4394.

• 2060-T8E30 Al-Li alloy
• Constitutive equation
• Hot deformation

The thermal deformation behavior of 2060-T8E30 aluminum-lithium alloy at deformation temperature of 425~500 ℃ and strain rate of 0.001~0.1 s-1 was studied by SansCMT4104 electronic universal experimental machine.The results show that the peak stress of 2060-T8E30 aluminum-lithium alloy decreases with the increase of temperature and the decrease of strain rate during thermal deformation.The average deformation activation energy of the alloy is240.502kJ/mol, and the average strain rate sensitivity index is 0.28.Based on the true stress-true strain curve of the thermal tensile test, the Arrhenius constitutive equation with strain compensation was established. The average relative error between the predicted value and the experimental value is 5.89%, showing good accuracy of the model.

• 单位
  南昌航空大学