Abstract
The evolution of the morphology of a micropore in a brittle solid under external stress is studied. It is shown that, under external stress, vacancies in a brittle solid diffuse to the micropore surface and join it. This process leads to fluctuations of the micropore surface. The surface tension of the micropore-medium boundary stabilizes the shape of the micropore in this case. It is found that, when the external stress exceeds a critical value, the shape of the micropore becomes unstable and the pore begins to grow and transforms into a microcrack nucleus.
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Original Russian Text © S.A. Kukushkin, S.V. Kuz’michev, 2008, published in Fizika Tverdogo Tela, 2008, Vol. 50, No. 8, pp. 1390–1394.
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Kukushkin, S.A., Kuz’michev, S.V. Evolution of the morphology of a micropore in a brittle solid under external stress. Phys. Solid State 50, 1445–1449 (2008). https://doi.org/10.1134/S1063783408080106
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DOI: https://doi.org/10.1134/S1063783408080106