Comptes Rendus
Splitting of dissolving precipitates during plastic shear: A phase field study
Comptes Rendus. Physique, Volume 22 (2021) no. S3, pp. 353-370.

Using a phase field model, we have investigated the role of plasticity on the morphological evolution of a precipitate during its diffusion-controlled dissolution, when submitted to shear loading. It is shown that the plastic strain pattern in the matrix strongly influences the local dissolution rate and consequently the final shape of the precipitate. Finally, it is demonstrated that for sufficiently fast and intense shear loadings, plasticity can induce splitting of the precipitate: this process could explain why small precipitates are observed in shear bands in Ti alloys forged parts.

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Published online:
DOI: 10.5802/crphys.82
Keywords: Phase field, Plasticity, Morphology, Shape bifurcation, Dissolution, Titanium alloys
Kais Ammar 1; Benoît Appolaire 2, 3; Samuel Forest 1

1 MINES ParisTech, PSL University, Centre des matériaux (CMAT), CNRS UMR 7633, BP 87 91003 Evry, France.
2 Université de Lorraine, Institut Jean Lamour, Nancy, France
3 Labex DAMAS, Université de Lorraine, France.
License: CC-BY 4.0
Copyrights: The authors retain unrestricted copyrights and publishing rights
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Kais Ammar; Benoît Appolaire; Samuel Forest. Splitting of dissolving precipitates during plastic shear: A phase field study. Comptes Rendus. Physique, Volume 22 (2021) no. S3, pp. 353-370. doi : 10.5802/crphys.82. https://comptes-rendus.academie-sciences.fr/physique/articles/10.5802/crphys.82/

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