Abstract

A method previously proposed which takes into account the influence of grain shape on the slip geometry of polycrystal deformation, is applied here to the large strain torsion of f.c.c. metals, and in particular to the prediction of texture. The results of the relaxed constraints (RC) theory on the one hand and of the full constraints (FC) classical theory (Taylor/Bishop and Hill) on the other are compared with those of experiments. Both the RC and FC theories describe the texture development well up to shear strains of about 3. At larger strains, however, the RC results correspond far better to the experimental textures, which tend towards a unique end orientation. It is also shown that the average Taylor factor decreases until γ = 3 and then increases towards an ultimate value of √3.

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