Plastic flow macrolocalization in aluminum and the Hall-Petch relation |
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Authors: | L. B. Zuev N. V. Zarikovskaya M. A. Fedosova |
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Affiliation: | 1.Institute of Strength Physics and Materials Science, Siberian Branch,Russian Academy of Sciences,Tomsk,Russia |
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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 ≈ 0.1 mm for both cases. A relation between localized plastic flow patterns and the Hall-Petch relation is revealed. |
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