Volume 33 Issue 3
Mar.  2018
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Creep constitutive model of Ni3Al-based single crystal superalloy[J]. Journal of Aerospace Power, 2018, 33(3): 657-662. doi: 10.13224/j.cnki.jasp.2018.03.019
Citation: Creep constitutive model of Ni3Al-based single crystal superalloy[J]. Journal of Aerospace Power, 2018, 33(3): 657-662. doi: 10.13224/j.cnki.jasp.2018.03.019

Creep constitutive model of Ni3Al-based single crystal superalloy

doi: 10.13224/j.cnki.jasp.2018.03.019
  • Received Date: 2016-09-11
  • Publish Date: 2018-03-28
  • Combined with the microscopic mechanism of the creep behavior of Ni3Al-based single crystal superalloy, the creep constitutive model based on the crystal slip theory was established to describe the creep behavior of Ni3Al-based single crystal superalloy. And the finite element implementation of the constitutive model established was conducted through the UPFs redevelopment platform provided by ANSYS. Using the creep test data, the model parameters of two kinds of Ni3Al-based materials were obtained based on genetic algorithm. Using the creep constitutive model established, the finite element simulation of high temperature tensile specimens of two kinds of Ni3Al-based materials was carried out, and the results had a good agreement with the test results. It shows that the creep constitutive model based on the crystal slip theory is reasonable and it can simulate three stages of creep behavior of Ni3Al-based single crystal superalloy well. Therefore, it has a definite application value.

     

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