Evaluation and visualization of geometrically necessary dislocations in metal microstructures by means of continuum mechanics analysis

Abstract
A numerical technique is shown for the evaluation of dislocation accumulation and their visualization. Plastic slip deformation of modeled metal microstructures are analyzed by a finite element method and developments of dislocation density distribution are evaluated in conjunction with gradients of plastic shear strain on crystal slip systems. The technique is applied to simplified geometries of inclusion - matrix microstructures and a three dimensional scenario of dislocation accumulation around the inclusion is discussed.