Abstract
The nucleation and development of plasticity in the FeNi alloy with a gradient grain structure and different grain shapes under uniaxial tension was investigated. The studies were carried out within the framework of the molecular dynamics method. The simulated samples contained grains, which shape was elongated to various degrees either in the direction of tension or in the perpendicular direction. It was found that an increase in the grain size in the direction of tension can lead to significant decrease of the material flow stress. At the same time, the deformation behavior of the material changes slightly even after a twofold increase in the initial grain size in the direction perpendicular to tension.
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