Crystal plasticity investigation of friction effect on texture evolution of Al single crystal during ECAP

• Published in: Journal of materials science Vol. 45; no. 17; pp. 4711 - 4717
• Main Authors: Deng, G. Y., Lu, C., Tieu, A. K., Su, L. H., Huynh, N. N., Liu, X. H.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.09.2010; Springer; Springer Nature B.V
• Subjects: Aluminum; Analysis; Billets; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Coefficient of friction; Computer simulation; Corners; Crystallography and Scattering Methods; Crystals; Equal channel angular pressing; Evolution; Finite element method; Friction; Materials Science; Plastic properties; Polymer Sciences; Single crystals; Solid Mechanics; Stress concentration; Surface layer; Texture; Ultrafine Grained Materials; Matrix Band; Equal Channel Angular Pressing; Pole Figure; Texture Evolution; Plastic Deformation Zone
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1007/s10853-010-4674-2

A crystal plasticity finite element model has been developed to study the effect of friction between the die wall and the billet on texture evolution during equal channel angular pressing of an aluminum single crystal. Four cases with different coefficients of friction μ = 0, 0.05, 0.1, and 0.15 have been simulated. It has been found that the friction of μ = 0.05 and 0.1 can capture the major texture features shown in the experimental results, and μ = 0.05 predicts a slightly better texture than μ = 0.1. The frictional condition significantly affects texture evolution in the region between 1/2 and 3/4 of the billet thickness from the top surface. It can be attributed to the effect of friction on the corner gap and the distribution of stresses in the die corner.