The Analysis of Microstructure and Texture Evolution in Polycrystal and Single Crystals of Nickel after Hydrostatic Extrusion Process

Abstract

The present work describes the influence of plastic deformation process on microstructureand texture evolution in face centered cubic materials. The investigations were carried out on polycrystal and single crystals with the initial orientation 〈111〉 and 〈110〉 of pure nickel (99.95%). Severe plastic deformation was realized by hydrostatic extrusion process with total strain value 0.5. The paper contains the qualitative and quantitative analysis of microstructure and description of texture evolution. The microstructure observations show the strong defected structure with many dislocations and average grain size about 0.4 µm. The texture results have shown the fibrous character of a texture only in polycrystalline material and strong texture in single crystals after deformation process.