Abstract
Characteristics of the plastic strain macrolocalization are compared to parameters of the Hall-Petch relation for the flow stress in polycrystalline aluminum samples with grain sizes ranging from 0.008 to 5 mm. It is established that, in the range of brain sizes studied, there are two possible types of the dependence of the length of localized strain autowave on the grain size and two variants of the Hall-Petch relation. It is shown that the boundary between the two variants in both cases corresponds to d ≈ 0.1 mm. Interconnection of the patterns of plastic flow localization and the Hall-Petch relation is traced.
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Original Russian Text © N.V. Zarikovskaya, L.B. Zuev, 2010, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2010, Vol. 36, No. 5, pp. 11–19.
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Zarikovskaya, N.V., Zuev, L.B. Localized plastic flow autowaves and the Hall-Petch relation in aluminum. Tech. Phys. Lett. 36, 199–202 (2010). https://doi.org/10.1134/S1063785010030028
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DOI: https://doi.org/10.1134/S1063785010030028