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Study on Hot Deformation Behavior and Constitutive Model of 2060-T8E30 Al-Li Alloy
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Nanchang Aeronautical University

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    Abstract:

    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 using 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 was 240.502kJ/mol, and the average strain rate sensitivity index was 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 of the model was 5.89%, showing a good accuracy of the model.

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[Yu Yibiao, Chen Leping, xu yong, Yuan Yuanping. Study on Hot Deformation Behavior and Constitutive Model of 2060-T8E30 Al-Li Alloy[J]. Rare Metal Materials and Engineering,2021,50(12):4388~4394.]
DOI:10.12442/j. issn.1002-185X.20200936

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History
  • Received:December 04,2020
  • Revised:April 08,2021
  • Adopted:April 15,2021
  • Online: January 09,2022
  • Published: December 24,2021