Abstract
The nonlinear dynamics of the space-time structure of macrolocalized deformation is studied by a set of high-speed in situ methods under the conditions of serrated creep in an aluminum-magnesium Al-6 wt % Mg alloy at room temperature. Macroscopic deformation jumps with an amplitude of several percent are detected in the creep curve of this alloy. It is found that a complex space-time structure of macrolocalized deformation bands moving in a correlated manner forms spontaneously in the material during the development of a deformation jump. The difference between the observed picture of deformation bands and the well-known Portevin-Le Chatelier classification of deformation bands is discussed.
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Original Russian Text © A.A. Shibkov, A.E. Zolotov, M.A. Zheltov, A.A. Denisov, M.F. Gasanov, 2014, published in Zhurnal Tekhnicheskoi Fiziki, 2014, Vol. 84, No. 4, pp. 40–46.
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Shibkov, A.A., Zolotov, A.E., Zheltov, M.A. et al. Plastic deformation macrolocalization during serrated creep of an aluminum-magnesium Al-6 wt % Mg alloy. Tech. Phys. 59, 508–514 (2014). https://doi.org/10.1134/S1063784214040227
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DOI: https://doi.org/10.1134/S1063784214040227