Abstract
The behaviour of creep-fatigue interaction of a new nickel-based superalloy has been described using the Chaboche unified model. Simple cyclic and dwell experiments have been carried out at three strain rates at 650°C. The optimised material parameters have been determined by a simultaneous numerical (non-linear least-square) approach as well as a step-by-step procedure using basic material data, and applied to dwell tests. The predictive capability of the Chaboche model for this alloy will be evaluated.
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