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Deformation effects and acoustic emission during high-temperature straining of aluminum

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Abstract

Thermomechanical cycling in polycrystalline aluminum has been studied. It is established that a monotonic accumulation of deformation with increasing temperature or mechanical stress during a cycle can change to a macroscopic deformation jump, which is accompanied by the transition from a monotonic acoustic emission into separate acoustic signals. In this state, the activation volume of an elementary deformation event exhibits exponential growth with the temperature during the cycle, which is evidence for an increase in the extent of elementary atomic displacements involved in this event.

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Authors and Affiliations

  1. Altai State University, Barnaul, Altai, Russia

    V. A. Plotnikov & S. V. Makarov

Authors
  1. V. A. Plotnikov
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  2. S. V. Makarov
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Correspondence to V. A. Plotnikov.

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Original Russian Text © V.A. Plotnikov, S.V. Makarov, 2008, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2008, Vol. 34, No. 6, pp. 65–72.

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Plotnikov, V.A., Makarov, S.V. Deformation effects and acoustic emission during high-temperature straining of aluminum. Tech. Phys. Lett. 34, 255–258 (2008). https://doi.org/10.1134/S1063785008030231

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  • DOI: https://doi.org/10.1134/S1063785008030231

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