Anisotropy as a consequence of cold rolling modes and cold rolling reduction always correlates crystallographic texture which plays an important role on deformation and mechanical behavior of materials. Textures develop in metallic materials as a result of almost all metal working operations. Since many applications require metallic material in sheet or plate form, evolution of textures resulting from rolling of these is worth studying. The present study is aimed at examining the effect of modes and extent of rolling on yield surface anisotropy, microstructure and texture of the pure nickel.  Hot rolled sheets of pure nickel of thickness 7 mm were subjected to different reductions using various modes of rolling, namely, unidirectional, two step cross-rolling and multi-step cross rolling. As consequences of different rolling modes and various percentage reductions the yield surfaces which changed were correlated with texture.Cold rolling of the starting material leads to marked increase in size of yield surface and this trend increases with increase in the degree of reduction, As a consequence of rolling reduction the shape and size of yield locus plots changes. As the rolling reduction increases from 30 to 85% in unidirectional, two steps and multi-step rolling modes the area of the yield locus plot (area of ellipse) increases for pure nickel, which indicates texture hardening. Both hot rolled and cold rolled pure nickel (unidirectional, two steps and multi-step rolling modes) shows mechanical property anisotropy and a definite nonrandom texture at 85% reduction.

Keywords: Anisotropy, Deformation, Rolling, Texture, Yield locus