The cyclic strain-hardening behaviour of single crystals having various slip orientations was considered systematically. It was shown that the crystallographic orientation had a marked effect upon the cyclic hardening behaviours of double-slip and multiple-slip oriented single crystals. The initial cyclic hardening of variously oriented single crystals depended mainly upon the modes and intensities of dislocation interactions between the slip systems which operated in the crystal, as well as upon possible cross-slip. A distinctive strain-burst phenomenon was frequently observed in the very early stages of cyclic hardening of critical double-slip oriented crystals. A secondary cyclic hardening stage occurred readily, late in the cyclic deformation of co-planar double-slip oriented crystals.

Influence of Crystallographic Orientation on Cyclic Strain-Hardening Behaviour of Copper Single Crystals. X.W.Li, Z.G.Wang, S.X.Li: Philosophical Magazine Letters, 1999, 79[11], 869-75