| Abstrakt: |
Constrained groove pressing is widely demonstrated to be a promising technique in acquiring ultra-fine grain structure and enhanced mechanical properties in sheet metallic materials. However, studies on evolution of texture during constrained groove pressing are limited, particularly in pure body centered cubic materials. In this study, texture development in ARMCO iron during constrained groove pressing is investigated for 3 cycles and 4 cycles. Additionally, these deformed sheets are cold rolled to thickness reductions of 60%, 75% and 90% in order to investigate the consequence of combined deformation mode on texture change. Texture analysis is carried out using orientation distribution function plots, based on electron backscatter diffraction. During the process of constrained groove pressing, occurrence of peak-type textures are observed, where only certain texture components are present instead of the complete textural fibres. Subsequent cold rolling of constrained groove pressed specimens contributes to the formation of typical body centered cubic fibre textures. Simultaneously, strengthening of texture with cold rolling up to 90% reduction is fairly observed. Further, textural details of three important fibres like α, γ and ε along with fractions of its texture components are quantitatively compared. [ABSTRACT FROM AUTHOR] |
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