This article is cited in 5 papers

Mechanical properties, strength physics and plasticity

Mechanism of low-frequency discrete acoustic emission during intermittent creep of aluminum alloy

A. A. Shibkov, M. A. Zheltov, M. F. Gasanov, A. E. Zolotov

Tambov State University named after G.R. Derzhavin

Abstract: A correlation between the dynamics of deformation bands and the discrete acoustic emission during the intermittent creep of the AlMg6 alloy using a high-speed video recording with a time resolution to 50 $\mu$s has been studied. A trigger of a macroscopic deformation step in the creep curve is the nucleation and the broadening of the primary deformation band that generates a characteristic acoustic emission signal with duration of several milliseconds. The results confirm the mechanism of generating an acoustic emission signal related to the cooperative dislocations outcrop on the specimen external surface.

Received: 10.05.2017

DOI: 10.21883/FTT.2017.12.45232.156

 English version: Physics of the Solid State, 2017, 59:12, 2387–2393

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