Chain Of Precipitates Model For Dislocation
Motion During Creep In Superalloys

J.L. Valles; D.J. Arrell

doi:10.2495/LD960511

Chain Of Precipitates Model For Dislocation Motion During Creep In Superalloys

Price

Free (open access)

Transaction

WIT Transactions on Engineering Sciences

Volume

Pages

Published

1996

Size

589 kb

Paper DOI

10.2495/LD960511

WIT Press

Author(s)

J.L. Valles & D.J. Arrell

Abstract

A one-dimensional model is developed to describe the motion of dislocations within a slip plane during creep in a single crystal superalloy. The most relevant creep mechanisms are incorporated in a simple way which allows for future refinements. The model parameters are obtained from micro-mechanical literature values and by calibration with experimental creep data. Computer simulations show good agreement with creep curves for other stress levels. 1. Introduction The use of single crystal nickel-base superalloys in load-bearing components for high temperature applications is widespread, due to the excellent preservation of their mechanical properties combined with a reasonable oxidation behaviour. Their superior creep resistance at elevated temperature is an effect o

Keywords

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Code

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