Application of a multiscale constitutive framework to real gas turbine components

T. Tinga, W.A.M. Brekelmans, M.G.D. Geers

Research output: Contribution to journalArticleAcademicpeer-review

1 Citation (Scopus)

Abstract

A multiscale constitutive framework for Ni-base superalloys has been developed, in which an efficient unit cell is adopted to describe the ?/?' microstructure morphology. The framework enables the prediction of the deformation and the creep and fatigue damage accumulation in CMSX-4 for a range of temperatures and stress levels. Moreover, the material microstructural degradation due to rafting and isotropic coarsening can be simulated, and the effects of this degradation on the alloy mechanical response can be quantified. The present paper focuses on the application of the model to real gas turbine components. A high pressure turbine blade finite element model is used to demonstrate the computational efficiency of the multiscale framework. Moreover, the location of critical regions and the life time are shown to differ from the results obtained from classical models that neglect the microstructure evolution.

Original languageEnglish
Pages (from-to)253-258
Number of pages6
JournalAdvanced materials research
Volume278
DOIs
Publication statusPublished - 4 Jul 2011

Fingerprint

Turbine components
Gas turbines
Degradation
Microstructure
Fatigue damage
Coarsening
Computational efficiency
Superalloys
Turbomachine blades
Creep
Turbines
Temperature

Keywords

  • Degradation
  • Mechanical properties
  • Microstructure
  • Modelling
  • Nickel base alloy

Cite this

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Application of a multiscale constitutive framework to real gas turbine components. / Tinga, T.; Brekelmans, W.A.M.; Geers, M.G.D.

In: Advanced materials research, Vol. 278, 04.07.2011, p. 253-258.

Research output: Contribution to journalArticleAcademicpeer-review

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