Plane-strain compression of aluminum crystals

Abstract

A plane-strain compression test was used to investigate the work-hardening of aluminum crystals deforming by multiple slip. Shear stress-strain curves were constructed from the compression data with an analysis of Bishop and Hill. The curves fall in a narrow band, indicating that, under conditions of multiple slip, the basic shear stress for slip depends primarily on the amount of prior slip, and that the combination of active slip systems is of much less importance. This observation supports a basic assumption in several theories of polycrystalline flow.Lattice rotation during plane-strain compression are reported and compared with similar observations during rolling.