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Article Dans Une Revue Philosophical Magazine Année : 2008

Coherency stresses in multilayers

Résumé

The determination of the elastic state of coherently matched layers is of importance in a wide range of domains: epitaxial films on a substrate with different crystal structures, deformation of a lamella welded on a substrate, lamellar crystals. It is shown that the elastic state of coherently matched multilayers depends on two coupled field quantities: the stress (or equivalently the elastic strain), and the curvature. A general method, is derived to determine these fields, and the contribution of curvature on stress relaxation is emphasized. Detailed applications are given for the case of stress-free dilatation, and pure shear.

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Dates et versions

hal-00513870 , version 1 (01-09-2010)

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Georges Saada. Coherency stresses in multilayers. Philosophical Magazine, 2008, 88 (05), pp.689-709. ⟨10.1080/14786430801953134⟩. ⟨hal-00513870⟩
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