Gururajan, MP and Abinandanan, TA (2006) Microstructural evolution in elastically inhomogeneous systems: II. Application to rafting. [Preprint]
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Abstract
Using a phase field model, we study elastic stress driven rafting in elastically inhomogeneous systems with a dilatational misfit: we study both single particle and multiparticle systems. In both, the direction of elongation observed in the kinetic setting is the same as that predicted by the thermodynamic models. Growth of a single isolated particle is hastenend when the sign of the applied stress matches that of misfit; the extent of its elongation is larger if the particle is softer than the matrix. For a given particle size, a larger supersaturation leads to a smaller particle elongation. In multiparticle systems, elastic interactions among particles play a significant role during rafting. In particular, these interactions lead particles to migrate (for both hard and soft particles) and coalesce (for soft particles).
Item Type: | Preprint |
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Keywords: | Phase field modelling;Mirostructure;Rafting;Elastic behaviour;Phase transformation kinetics |
Department/Centre: | Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
Date Deposited: | 22 May 2006 |
Last Modified: | 22 Feb 2012 08:49 |
URI: | http://eprints.iisc.ac.in/id/eprint/6789 |
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