Deformation tests were carried out on 6H-type samples with an orientation that favored activation of the <2¯1•0>(00•1) slip system. The tests were performed at temperatures of between 550 and 1400C, using a strain rate of 3.1 x 10-5/s. Optical and transmission electron microscopy were then used to study deformation-induced defects such as stacking faults, deformation kinks, and cracks. On the basis of the observations, a mechanism was proposed for the formation of deformation kinks, nucleation and propagation of cracks, and temperature dependence.

A.V.Samant, X.L.Wei, P.Pirouz: Philosophical Magazine A, 1998, 78[3], 737-46