Spectral and dynamic analysis of plastic instabilities during serrated creep of the aluminum-magnesium alloy

• Published in: Physics of the solid state Vol. 56; no. 5; pp. 889 - 893
• Main Authors: Shibkov, A. A., Zolotov, A. E., Zheltov, M. A., Denisov, A. A., Gasanov, M. F.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-05-2014; Springer
• Subjects: Magnesium alloys; Metals; Physics; Physics and Astronomy; Solid State Physics; Specialty metals industry; Flicker Noise; Hurst Exponent; Aluminummagnesium Alloy; Deformation Band; Force Response
• ISSN: 1063-7834; 1090-6460
• DOI: 10.1134/S1063783414050278

The force response to the development of a macroscopic plastic deformation jump under the conditions of serrated creep of the aluminummagnesium alloy 5456 has been studied using spectral and dynamic analysis methods. The flicker-noise structure of the force response indicating the self-organized criticality state has been revealed. It has been found that a short-term state of plastic instability flatter spontaneously appears during the development of the macroscopic deformation step.