Problem of Lattice Rotation Due to Plastic Deformation. Example of Rolling of f.c.c Materials

[摘要] Rotations of grain crystal lattice are responsible for texture formation during plastic deformation. The classical definition of lattice rotation leads in some cases to different texture predictions than the definition based on the orientation preservation of selected sample directions and/or planes. For example, if classical <110>{111} slip is taken into account for f.c.c. materials, the former approach enables to predict both copper and brass types of rolling texture, while classical approach predicts only the first one. The analysis of rolling process was done for two types of lattice rotation and in function of grain-matrix interaction parameter used in a deformation model. Correlation factors estimating the similarity of predicted and experimental textures as well as the shares of ideal orientations are discussed.

[学科分类] 金属与冶金

[关键词] Keywords: lattice rotation;elasto-plastic deformation models;copper-brass texture transition;rolling deformation