Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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REGULARITIES OF ACOUSTIC EMISSION AT HIGH-TEMPERATURE DEFORMATION OF THE ALLOY AMG6

Makarov S.V. 1, 2
1 Altai State University
2 Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences
The investigations were carried out and the results of analysis of deformation and acoustic effects in aluminum-magnesium alloys at high temperatures were shown. It was found that heating of the loaded samples leads to monotonically accumulation of deformation, accompanied by monotonous acoustic emission. Upon reaching a temperature of 400 0C strain rate increases dramatically, which leads to an increase in the amplitude of acoustic signals. It was found that during mechanical loading (55 MPa) of AMg6 alloy at temperatures from 100 up to 350 0C RMS peak of acoustic emission is formed. Subsequent loading RMS peak of acoustic emission is observed only in the cycle in which the load is increased relative to the previous cycle (e.g., 65 MPa). This behavior of the alloy may indicate the flow of partial decomposition of the supersaturated solid solution, the diffusion mechanism is implemented in terms of mechanical activation.