Abstract

Deformation of NiAl single crystals during tensile testing was simulated using finite element analysis to investigate the modes of localized deformation. The effect of varying the loading direction with respect to lattice was studied to understand the deformation mechanism. Three-dimensional finite element models of tensile testing were created to study the effect of latent hardening when multiple slip systems are active. In particular, necking, neck diffusion and kink band formation were studied and the material and geometric characteristics that influence the deformation mode were investigated.

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