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    Abstract:

    The thermal compression test of TC6 titanium alloy under low strain rate and large deformation was carried out by Thermecmastor Z100kn thermal simulation machine. The true stress-strain curves were obtained when the deformation temperature was 900 ~ 945℃, the strain rate was 0.0001 ~ 0.1s-1 and the deformation degree was 70%.The traditional friction correction model and the improved friction correction model were used to correct the true stress-strain curve, and the strain-compensated Arrhenius model based on the friction correction was established. The results show that the modified friction correction model can better characterize the true stress-strain dynamic response of materials under large deformation. The strain-compensated Arrhenius model modified by friction model has higher linear correlation, smaller mean absolute error and higher prediction accuracy.

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[Zhu Lin, Xu Yong, Chen Leping, Hu Shengshuang, Xin Zhouyuan. Low strain rate deformation constitutive model of TC6 titanium alloy based on friction correction[J]. Rare Metal Materials and Engineering,2023,52(5):1819~1825.]
DOI:10.12442/j. issn.1002-185X.20220342

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History
  • Received:April 22,2022
  • Revised:June 14,2022
  • Adopted:July 12,2022
  • Online: June 08,2023
  • Published: May 29,2023