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Prediction of Energy Barriers due to Nucleation in Solid‐to‐Solid Phase–Transitions
Author(s) -
Bartel Thorsten,
Hackl Klaus
Publication year - 2006
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200610212
Subject(s) - nucleation , homogeneous , context (archaeology) , work (physics) , phase (matter) , nucleus , materials science , statistical physics , matrix (chemical analysis) , stress (linguistics) , physics , thermodynamics , composite material , geology , paleontology , quantum mechanics , biology , microbiology and biotechnology , linguistics , philosophy
This contribution generally aims at the application of the multiscale‐FEM to problems arising from inhomogeneities of arbitrary shape within a solid matrix material. In the context of our work, the inhomogeneity represents a nucleus of a new solid phase. According to the theory of homogeneous nucleation, the model predicts whether it is energetically preferable to initiate the growth of the nucleus or not. The implementation of this procedure into a micromechanical model for shape‐memory alloys is assumed to be suitable to reconstruct the so‐called stress‐drop after the initiation of phase‐transformation as observed in experiments. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)