Role of stacking fault energy on texture evolution revisited

17th International Conference on Textures of Materials

材料科学;物理学

Madhavan, R.^1 ; Kalsar, R.^1 ; Ray, R.K.^2 ; Suwas, S.^1

Department of Materials Engineering, Indian Institute of Science, Bangalore

560012, India^1

Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kanpur

208016, India^2

关键词: Brass type texture;    Deformation process;    Deformation twinning;    Intermediate stage;    Stacking fault energies;    Synergistic effect;    Texture and microstructures;    Texture evolutions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/82/1/012031/pdf
DOI  :  10.1088/1757-899X/82/1/012031

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Three materials, pure aluminium, Al-4 wt.% Mg, α-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. α-brass shows a characteristic brass-type texture from the early stages of rolling. Extensive twinning in the intermediate stages of deformation (Εt∼ 0.5) causes significant texture reorientation towards α-fiber. Beyond 40% reduction, deformation is dominated by Bs-type shear bands, and the banding coincides with the evolution of IIND components. The crystallites within the bands preferentially show IIND 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.