Two- and three-dimensional simulations of the phase separation of elastically coherent binary alloys subject to external stresses

2000 ◽  
Vol 62 (5) ◽  
pp. 3160-3168 ◽  
Author(s):  
Daniel Orlikowski ◽  
Celeste Sagui ◽  
Andrés M. Somoza ◽  
Christopher Roland
Keyword(s):  
Phase Separation ◽  
Binary Alloys ◽  
Three Dimensional ◽  
External Stresses ◽  
Three Dimensional Simulations

Phase Separation and Elastic Fields: Three Dimensional Simulations of a Phase Field Model

1999 ◽  
Vol 580 ◽  
Author(s):  
Daniel Orlikowski ◽  
Celeste Sagui ◽  
Andrds Somoza ◽  
Christopher Roland
Keyword(s):  
Phase Separation ◽  
Large Scale ◽  
Ostwald Ripening ◽  
Three Dimensional ◽  
Selection Criterion ◽  
Phase Field Model ◽  
Dynamic Scaling ◽  
Shear Moduli ◽  
Elastic Fields ◽  
Three Dimensional Simulations

AbstractThe effects of long-range elastic fields on the phase separation process of 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 criterion for the shape and/or orientation of the domains, and is based on the different shear moduli that are present in the system. Coarsening mechanisms were found to be a combination of the classical Ostwald ripening mechanism and the elastically-driven coalescence of domains. Other aspects of the coarsening process such as dynamic scaling of the structure function is presented.

Three-Dimensional Simulations of Phase Separation in Model Binary Alloy Systems with Elasticity

1997 ◽  
Vol 481 ◽  
Author(s):  
D. Orlikowski ◽  
C. Sagui ◽  
A. S. Somoza ◽  
C. Roland
Keyword(s):  
Phase Separation ◽  
Binary Alloy ◽  
Large Scale ◽  
Three Dimensional ◽  
Elastic Field ◽  
Dimensional System ◽  
Elastic Fields ◽  
Slowing Down ◽  
Three Dimensional Simulations ◽  
Alloy Systems

ABSTRACTWe report on large-scale three-dimensional simulations of phase separation in model binary alloy systems in the presence of elastic fields. The elastic field has several important effects on the morphology of the system: the ordered domains are subject to shape transformations, and spatial ordering. In contrast to two-dimensional system, no significant slowing down in the growth is observed. There is also no evidence of any “reverse coarsening” of the domains.

Three-dimensional simulations of freckles in binary alloys

1998 ◽  
Vol 191 (4) ◽  
pp. 879-888 ◽  
Author(s):  
S.D. Felicelli ◽  
J.C. Heinrich ◽  
D.R. Poirier
Keyword(s):  
Binary Alloys ◽  
Three Dimensional ◽  
Three Dimensional Simulations
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