Normalized Parameter Creep Model of DD6 Nickel-Based Single Crystal Superalloy

Autor: Dasheng Wei, Yihui Liu, Yanrong Wang, Jialiang Wang, Xianghua Jiang
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Metals, Vol 11, Iss 2, p 254 (2021)
Druh dokumentu: article
ISSN: 2075-4701
DOI: 10.3390/met11020254
Popis: For nickel-based single crystal superalloy DD6 (AECC Beijing Institute of Aeronautical Materials, Beijing, China) material, a method for predicting creep rupture time was proposed based on a newly defined equivalent stress method. An anisotropic creep model for describing the orientation-dependent creep behavior and lifetime of a nickel-based single crystal superalloy was proposed. The creep subroutine was written based on the proposed nickel-based single crystal creep model. The stability of the model was improved by adjusting the iterative algorithm. The creep calculation results in [001], [011], and [111] loading directions were compared with the experimental results. The accuracy of the calculation results by the nickel-based single crystal creep subroutine was verified. The initial time step and maximum time step of the creep subroutine were studied.
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