Simulations of stress-strain heterogeneities in copper thin films : texture and substrate effects

Filip Siska (1) , Samuel Forest (1) , P. Gumbsch (2)

1 CDM - Centre des Matériaux
2 Institut für Zuverlässigkeit von Bauteilen und Systemen (izbs),

Finite element simulations of the elastic and elastic–plastic deformation of copper thin films are performed in the presence or not of substrate. The investigated textures are {1 1 1} and {0 0 1}. In the anisotropic elastic case, {0 0 1} films are associated with more strain heterogeneities than {1 1 1} films. Strong plastic strain heterogeneities are found in {0 0 1} films. The presence of a substrate increases significantly the heterogeneity of stress–strain fields.

Mots clés: Finite elements; Thin films; Polycrystals; Crystal plasticity

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Filip Siska, Samuel Forest, P. Gumbsch. Simulations of stress-strain heterogeneities in copper thin films : texture and substrate effects. Computational Materials Science, 2007, 39, pp.137-141. ⟨10.1016/j.commatsci.2006.02.025⟩. ⟨hal-00148588⟩