Phase-field model for diffusional phase transformations in elastically inhomogeneous polycrystals

Tae Wook Heo, Saswata Bhattacharyya, Long Qing Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

A phase-field model is described for predicting the diffusional phase transformation process in elastically inhomogeneous polycrystals. The elastic interactions are incorporated by solving the mechanical equilibrium equation using the Fourier-spectral iterative-perturbation scheme taking into account elastic modulus inhomogeneity. A number of examples are presented, including grain boundary segregation, precipitation of second-phase particles in a polycrystal, and interaction between segregation at a grain boundary and coherent precipitates inside grains. It is shown that the local pressure distribution due to coherent precipitates leads to highly inhomogeneous solute distribution along grain boundaries.

Original languageEnglish (US)
Title of host publicationSolid-Solid Phase Transformations in Inorganic Materials
PublisherTrans Tech Publications Ltd
Pages1084-1089
Number of pages6
ISBN (Print)9783037851432
DOIs
StatePublished - 2011

Publication series

NameSolid State Phenomena
Volume172-174
ISSN (Print)1012-0394

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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    Heo, T. W., Bhattacharyya, S., & Chen, L. Q. (2011). Phase-field model for diffusional phase transformations in elastically inhomogeneous polycrystals. In Solid-Solid Phase Transformations in Inorganic Materials (pp. 1084-1089). (Solid State Phenomena; Vol. 172-174). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/SSP.172-174.1084