Effect of Preliminary Cycling on the Acoustic Emission Characteristics of Structural 15Kh2GMF Steel

The stages of changing the acoustic emission characteristics of 15Kh2GMF steel used for manufacturing oil-pump sucker rods is studied during tension before and after preliminary cyclic loading to various values of relative life. The revealed stages are shown to agree with the data of estimating the...

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Bibliographic Details
Published in:Russian metallurgy Metally 2021, Vol.2021 (1), p.32-41
Main Authors: Botvina, L. R., Tyutin, M. R., Bolotnikov, A. I., Petersen, T. B.
Format: Article
Language:English
Subjects:
Acoustic emission
Acoustic microscopy
Acoustic properties
Acoustics
Chemistry and Materials Science
Cycles
Cyclic loads
Materials Science
Metallic Materials
Structural steels
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Summary:The stages of changing the acoustic emission characteristics of 15Kh2GMF steel used for manufacturing oil-pump sucker rods is studied during tension before and after preliminary cyclic loading to various values of relative life. The revealed stages are shown to agree with the data of estimating the development of real damage by optical and digital microscopy. The acoustic parameters that can be diagnostic criteria characterizing a change in the steel state after preliminary cyclic loading have been determined, and their dependence on the relative number of cycles has been found. The changes in the form, spectrum, and median frequency of acoustic signals in steel samples are studied in the initial state and after preliminary cycling.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029521010043