f.c.c.多結晶金属の平面ひずみ圧縮変形下における集合組織の発達

抄録

Texture development caused by {111} ‹011› slips during plane strain compression is calculated on the basis of rate-dependent crystal plasticity theory. The polycrystalline model proposed by Asaro et al. is used for the expression of the behavior of aggregates. Two types of initial orientation distributions determined from recrystalized texture of Al-Mg alloys are used for the calculation. As reduction proceeds, deformation texture characterized by β-fiber devel-opment evolves, and the result shows good agreement with the experimental result of cold-rolled Al-Mg alloys. Finally the yield surface estimations are performed using the calculated texture. Strong in-plane plastic anisotropy caused by texture development is predicted from these results.