Large-scale simulations of phase separation of elastically coherent binary alloy systems

Phys. Rev. B 59, 8646 – Published 1 April 1999
Daniel Orlikowski, Celeste Sagui, Andrés Somoza, and Christopher Roland

Abstract

The effects of long-range elastic fields on the phase separation process of both two- and three-dimensional binary alloy systems was investigated with large-scale Langevin simulations. The elastic effects incorporated in the model are the result of anisotropy and dilational misfits introduced via inhomogeneities in the elastic constants of the constituents. The domain morphology obtained is readily understandable in terms of selection criteria for the shape and/or orientation of the domains based on the different shear moduli that are present in the system. Furthermore, the coarsening behavior of the domains is discussed in terms of the generated chemical potential barriers surrounding the precipitates. Other aspects of the coarsening process such as dynamic scaling of the correlation functions and local inverse coarsening are also discussed.

DOI: http://dx.doi.org/10.1103/PhysRevB.59.8646

  • Received 7 October 1998
  • Published in the issue dated 1 April 1999

© 1999 The American Physical Society

Authors & Affiliations

Daniel Orlikowski and Celeste Sagui

  • Department of Physics, North Carolina State University, Raleigh, North Carolina 27695

Andrés Somoza

  • Departamento de Fisica, Universidad de Murcia, Apartado 4021 E-30080, Murcia, Spain

Christopher Roland

  • Department of Physics, North Carolina State University, Raleigh, North Carolina 27695

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