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Abstract

The paper briefly discusses the charcteristics of creep deformation and the requirements of any creep equation developed to quantify this behavior. It is shown how the Graham and Walles methodology (1)† fulfils the identified objectives and how the equations have been applied to simple and complex variable loading situations.

By reference to an appropriate blade alloy it will be shown that the approach can be extended to produce deformation maps and the results will be compared with theoretical creep models such as dislocation shearing of precipitate particles.

Finally it is shown how the Graham and Walles model has been applied to single crystal materials to predict creep in randomly oriented crystals.

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References

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The application of the Graham and Walles creep equation to aeroengine superalloys

Abstract

Abstract

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References