Dislocation gliding in a coated buried layer submitted to misfit stress

Colin, Jérôme

doi:10.2140/jomms.2025.20.315

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Dislocation gliding in a coated buried layer submitted to misfit stress

Jérôme Colin

Vol. 20 (2025), No. 3, 315–326

DOI: 10.2140/jomms.2025.20.315

Abstract

The introduction of an edge dislocation gliding into the interfaces of a thin layer embedded in a semi-infinite matrix of the same elastic constants and submitted to misfit stress has been investigated from a Peach–Koehler force analysis. Assuming the two-phase structure is coated with a third solid of different elastic constants, the unstable equilibrium positions and the stable equilibrium positions of the edge dislocation have been characterized into the layer-matrix interfaces versus the misfit stress, the ratio of the shear moduli and the coating thickness.

Keywords

dislocation, plasticity, modeling, thin film

Mathematical Subject Classification

Primary: 74, 74B05, 74K35, 74M25

Milestones

Received: 24 March 2025

Revised: 16 July 2025

Accepted: 21 July 2025

Published: 2 September 2025

Authors

Jérôme Colin
Institut P’ Université de Poitiers ISAE-ENSMA, CNRS , Poitiers, 86073 France

Vol. 20, No. 3, 2025