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Dislocation Structures and the Deformation of Materials

2004; American Physical Society; Volume: 93; Issue: 26 Linguagem: Inglês

10.1103/physrevlett.93.265503

1092-0145

Marisol Koslowski, R. LeSar, Robb Thomson,

Aluminum Alloy Microstructure Properties

We present results from phase-field simulations of a two-dimensional model of dislocation microstructure development under increasing strain that incorporates the effects of the full, three-dimensional, microstructure in an approximate way. Despite its simplicity, the model yields quantitative predictions of both the deformation properties of face-centered cubic metals as well as key descriptors of the evolving microstructure over a wide range of stress and strain. The present results have important implications for how we interpret and describe the deformation properties of fcc materials.