Abstract:
The parameters of plastic deformation macrolocalization are compared to the parameters of the Hall–Petch relation for the flow stress in polycrystalline aluminum samples with a grain size of 0.008–5.000 mm. Two types of the dependence of the localized plastic deformation autowave length on the grain size and two versions of hardening according to the Hall–Petch relation are found in the grain size range under study. The boundary between these versions is shown to correspond to $d\approx$ 0.1 mm for both cases. A relation between localized plastic flow patterns and the Hall–Petch relation is revealed.
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