Phase-field study for the splitting mechanism of coherent misfitting precipitates in anisotropic elastic media

Through a phase-field study upon the splitting behavior and morphological evolution of coherent precipitates, we show that an interface instability driven by elastic anisotropy and a diffusion field can generate elastically induced splitting during diffusional phase transition. Particle splitting is...

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Bibliographic Details
Published in:Scripta materialia 2005-06, Vol.52 (12), p.1241-1245
Main Authors: Cha, Pil-Ryung, Yeon, Dong-Hee, Chung, Soon-Hyo
Format: Article
Language:English
Subjects:
Applied sciences
Coherent precipitates
Exact sciences and technology
Metals. Metallurgy
Microstructure
Particle splitting
Phase transformation
Phase-field models
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Summary:Through a phase-field study upon the splitting behavior and morphological evolution of coherent precipitates, we show that an interface instability driven by elastic anisotropy and a diffusion field can generate elastically induced splitting during diffusional phase transition. Particle splitting is triggered by interface grooving which advances by penetrating grooves into the interior of the particle. The sequential evolution of shapes during the splitting process is in good agreement with previous experiments.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2005.02.026