  The plastic deformation mechanisms of tungsten carbide at room and elevated
temperatures influence the wear and fracture properties of WC-Co hardmetal
composite materials. The relationship between residual defect structures,
including glissile and sessile dislocations and stacking faults, and the slip
deformation activity, which produce slip traces, is not clear. Part 1 of this
study showed that {10-10} was the primary slip plane at all measured
temperatures and orientations, but secondary slip on the basal plane was
activated at 600 {\deg}C, which suggests that <a> dislocations can cross-slip
onto the basal plane at 600 {\deg}C. In the present work, Part 2, lattice
rotation axis analysis of deformed WC micropillar mid-sections was used to
discriminate <a> prismatic slip from multiple <c+a> prismatic slip in WC, which
enabled the dislocation types contributing to plastic slip to be distinguished,
independently of TEM residual defect analysis. Prismatic-oriented micropillars
deformed primarily by multiple <c+a> prismatic slip at room temperature, but by
<a> prismatic slip at 600 {\deg}C. Deformation in the near-basal oriented
pillar at 600 {\deg}C can be modelled as prismatic slip along <c> constrained
by the indenter face and pillar base. Secondary <a> basal slip, which was
observed near the top of the pillar, was activated to maintain deformation
compatibility with the indenter face. The lattice rotations, buckled pillar
shape, mechanical data, and slip traces observed in the pillar are all
consistent with this model.
