Studying High-Frequency Acoustic Emission during Discontinuous Creep in an Aluminum-Magnesium Alloy

被引：0
|
作者：
Shibkov, A. A. [1 ]
Zheltov, M. A. [1 ]
Gasanov, M. F. [1 ]
Zolotov, A. E. [1 ]
Denisov, A. A. [1 ]
Kochegarov, S. S. [1 ]
机构：
[1] Tambov State Univ, Tambov 392000, Russia
来源：
TECHNICAL PHYSICS | 2020年 / 65卷 / 10期
基金：
俄罗斯科学基金会; 俄罗斯基础研究基金会;
关键词：
SOURCE MODEL; JERKY FLOW; STRAIN; DYNAMICS; SMOOTH; TESTS;
D O I：
10.1134/S1063784220100199
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Formation of macrolocalized deformation bands under conditions of serrated creep is studied by methods of acoustic emission (AE) and high-speed video recording. It is established that the fastest stages of the deformation band formation, which are related to the emergence of a band on the surface with subsequent accelerated expansion, are accompanied by generating a burst of an AE signal in the band of similar to 0.05-1 MHz. Hidden correlations in the complex structure of the acoustic burst were studied by methods of statistical and fractal analysis. The relation between the acoustic burst envelope and variation rate of the force response caused by the formation of an individual deformation band is established.
引用
收藏
页码：1622 / 1629
页数：8
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