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  • Predictive microstructural assessment and micromechanical modelling of deformation and damage accumulation in single crystal gas turbine blading (MICROMOD-SX)


Synthesis report of project BRPR CT96-0224

The project set out to provide an improved basis for accounting for the anisotropic mechanical behaviour of single crystal superalloys under conditions relevant to high temperature service. Two micromechanical models were used for predicting deformation and failure of single crystal (SX) gas turbine blading. The models were tuned on the basis of uniaxial creep and fatigue tests. The results of the present project have increased the basic understanding of deformation and damage processes in SX super alloys under complex loading conditions. The final industrial assessment of the two modelling approaches developed highlights the complexity of high temperature anisotropic materials behaviour.

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