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Dislocation gliding in a freestanding film submitted to uniaxial stress

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Abstract

The equilibrium positions of an edge dislocation embedded in a freestanding thin film submitted to uniaxial stress have been characterized from a Peach–Koehler force calculation. Depending on the inclination angle of the dislocation gliding plane with respect to the film horizontal axis, one stable and two unstable equilibrium positions have been first identified for the dislocation, when the film is stress-free. A critical angle has been also determined beyond which only one unstable equilibrium position remains. The effects of compressive and tensile applied stress have been then analyzed on the dislocation stability in the film and the stress values beyond which no longer the dislocation has a stable equilibrium have been finally determined.

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Acknowledgements

This work pertains to the French Government program “Investissements d’Avenir” (EUR INTREE, reference ANR-18-EURE-0010).

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  1. Institut Pprime, CNRS-Université de Poitiers-ISAE-ENSMA, Boulevard Marie et Pierre Curie, 86073, Poitiers, Vienne, France

    Jérôme Colin

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Colin, J. Dislocation gliding in a freestanding film submitted to uniaxial stress. Arch Appl Mech 93, 2983–2991 (2023). https://doi.org/10.1007/s00419-023-02421-4

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