Open AccessRole of stacking fault energy on texture evolution revisited
Author(s) -
R. Madhavan,
Rajib Kalsar,
R. K. Ray,
Satyam Suwas
Publication year - 2015
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/82/1/012031
Subject(s) - stacking fault energy , brass , crystal twinning , materials science , shear (geology) , metallurgy , slip (aerodynamics) , copper , deformation bands , deformation (meteorology) , microstructure , texture (cosmology) , aluminium , alloy , composite material , physics , thermodynamics , image (mathematics) , artificial intelligence , computer science
Three materials, pure aluminium, Al-4 wt.% Mg, alpha-brass have been chosen to understand the evolution of texture and microstructure during rolling. Pure Al develops a strong copper-type rolling texture and the deformation is entirely slip dominated. In Al-4Mg alloy, texture is copper-type throughout the deformation. The advent of Cu-type shear bands in the later stages of deformation has a negligible effect on the final texture. alpha-brass shows a characteristic brass-type texture from the early stages of rolling. Extensive twinning in the intermediate stages of deformation (epsilon(t) similar to 0.5) causes significant texture reorientation towards alpha-fiber. Beyond 40% reduction, deformation is dominated by Bs-type shear bands, and the banding coincides with the evolution of <111>parallel to ND components. The crystallites within the bands preferentially show <110>parallel to ND components. The absence of the Cu component throughout the deformation process indicates that, for the evolution of brass-type texture, the presence of Cu component is not a necessary condition. The final rolling texture is a synergistic effect of deformation twinning and shear banding