A Study Of Creep-fatigue Interaction In A New
Nickel-based Superalloy
Author(s)
Z.L. Zhan & J. Tong
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 650oC. The optimised
material parameters have been determined by a simultaneous numerical (nonlinear
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.
Keywords: unified constitutive models, parameter determination, non-liner leastsquare
optimisation, creep-fatigue interaction, nickel-based superalloy.
1 Introduction
A new nickel-based superalloy has been developed at Rolls Royces plc via a
power metallurgy route for turbine disc application. The alloy is solution tre
Keywords
Related Book
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