Paper Title:
Application of a Multiscale Constitutive Framework to Real Gas Turbine Components
  Abstract

A multiscale constitutive framework for Ni-base superalloys has been developed, in which an efficient unit cell is adopted to describe the γ/γ’ 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.

  Info
Periodical
Edited by
M. Heilmaier
Pages
253-258
DOI
10.4028/www.scientific.net/AMR.278.253
Citation
T. Tinga, W.A.M. Brekelmans, M.G.D. Geers, "Application of a Multiscale Constitutive Framework to Real Gas Turbine Components", Advanced Materials Research, Vol. 278, pp. 253-258, 2011
Online since
July 2011
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