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Kinetics of localized plastic flow during deformation and fracture of a D1 alloy

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Abstract

The stress-strain curve of a polycrystalline duralumine (D1) is studied to find three basic deformation stages: linear hardening, parabolic hardening (n = 1/2), and prefracture (n < 1/2). The results obtained show special features of macrolocalization of the plastic flow of the alloy under review. The distribution patterns of localized plastic flow domains develop according to deformation stages. The prefracture stage is characterized by self-correlated motion of the domains to the point of subsequent fracture. It follows from an analysis of the plastic flow localization kinetics that both hardening and softening domains coexist in the specimen in the prefracture stage. The domains move with a constant velocity inherent to each of them and linearly dependent on the position of their nucleation point.

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Authors and Affiliations

  1. Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, Russia

    A. V. Bochkareva, L. B. Zuev & V. I. Danilov

Authors
  1. A. V. Bochkareva
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  2. L. B. Zuev
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  3. V. I. Danilov
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Correspondence to A. V. Bochkareva.

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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 11, pp. 68–73, November, 2007.

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Bochkareva, A.V., Zuev, L.B. & Danilov, V.I. Kinetics of localized plastic flow during deformation and fracture of a D1 alloy. Russ Phys J 50, 1136–1141 (2007). https://doi.org/10.1007/s11182-007-0167-4

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  • DOI: https://doi.org/10.1007/s11182-007-0167-4

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