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Microstructure simulations within the Lattice Statics formalism: elasticity and morphologies at the atomic scale

Published online by Cambridge University Press:  08 April 2013

C. Varvenne ,
Y. Le Bouar ,
A. Finel  and
M. Fèvre
C. Varvenne
Affiliation:
Currently at Service de Recherche de Métallurgie Physique, DEN/DMN/SRMP, 91191 Gif-sur-Yvette, FRANCE
Y. Le Bouar
Affiliation:
Laboratoire d’Etude des Microstructures, CNRS - Onera, 29 avenue de la division Leclerc, 92322 Châtillon, FRANCE
A. Finel
Affiliation:
Laboratoire d’Etude des Microstructures, CNRS - Onera, 29 avenue de la division Leclerc, 92322 Châtillon, FRANCE
M. Fèvre
Affiliation:
Laboratoire d’Etude des Microstructures, CNRS - Onera, 29 avenue de la division Leclerc, 92322 Châtillon, FRANCE
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Abstract

In this paper, the Lattice Statics formalism is used to perform Monte Carlo simulations of alloy microstructures when elastic effects are present. It provides sets of long-range effective pair interactions (EPIs), defined in a rigid average reference state, that allow us to compute microstructural evolutions on diffusion time scale. A wide composition range is investigated in order to characterize the different precipitation processes with elasticity (nucleation and growth, spinodal decomposition). An advantage of the approach is to include the concentration dependence of both the effective chemical interactions and the elastic properties of the reference state. The importance of this point is illustrated by comparing the precipitation sequences in two alloys with symmetric average concentrations.

Keywords

phase transformationdiffusionx-ray diffraction (XRD)
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1535: Symposium a – Proceedings of the Multiscale Materials Modeling 2012 Conference , 2013 , mmm2012-a-0085
Copyright
Copyright © Materials Research Society 2013 

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References

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