Abstract
The dynamics of the bands of macrolocalized deformation generated by the impact of the Vickers indenter on the surface of AMg6 aluminum–magnesium alloy deformed under creep conditions was studied using high-speed video and acoustic emission methods. It is established that these bands are the trigger for the development of a macroscopic jump in plastic deformation on the creep curve. It is shown that in alloys demonstrating the Portevin–Le Chatelier effect, it is necessary to take into account the origin and propagation of macrobands of deformation during erosive damage to the surface and to assess the volume and morphology of the plastic zone during impact microindentation of the deformable alloy.
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Funding
The work was partially supported by the Russian Science Foundation (project no. 22-22-00692) using the equipment of the Center for Collective Use of Tambov State University Mamed after G.R. Derzhavin and with partial support of the Ministry of Science and Higher Education of the Russian Federation under project agreement no. 075-15-2021-709 (project unique identifier 2296.61321X0037).
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Translated by N. Petrov
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Shibkov, A.A., Zolotov, A.E., Denisov, A.A. et al. Dynamics of Deformation Bands Initiated by the Impact of an Indenter on the Surface of an Aluminum–Magnesium Alloy. Tech. Phys. Lett. 48, 188–191 (2022). https://doi.org/10.1134/S1063785022060037
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DOI: https://doi.org/10.1134/S1063785022060037