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Dynamic recrystallization behavior and numerical simulation of fine grain TC4 titanium alloy
Affiliation:

Xi’an University of Architecture Technology,Xi’an

Clc Number:

TG 146.4

Fund Project:

The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    Abstract:

    The dynamic recrystallization (DRX) behavior of fine-grain TC4 titanium alloy prepared by continuous variable cross-section recycled extrusion during hot working was investigated by combining experiment and finite element simulation. The critical strain and DRX dynamic models of fine-grain TC4 titanium alloy were established based on the true stress-strain curves obtained by the experiment. The material properties were defined based on the DRX models, and the thermal compression process was simulated by DEFORM-3D software. The results show that the DRX behavior of fine grain TC4 is significantly affected by thermal compression processing parameters; the volume fraction of dynamic recrystallization (XDRX) and the grain size are increased with increasing deformation temperature and decreasing strain rate; the equivalent strain and range of the deformation zone are increased simultaneously with increasing strain; the correlation between the experimental value and the simulated value of XDRX is 0.9762, which indicates the high accuracy of the established model.

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[Liu Yingying, Li Jiayi, Guo Wenhu, Zhang Junyan, Zhai Jiangbo. Dynamic recrystallization behavior and numerical simulation of fine grain TC4 titanium alloy[J]. Rare Metal Materials and Engineering,2022,51(11):4137~4145.]
DOI:10.12442/j. issn.1002-185X.20220350

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History
  • Received:April 24,2022
  • Revised:June 23,2022
  • Adopted:June 23,2022
  • Online: December 02,2022
  • Published: November 30,2022