Application of acoustic emission to the analysis of phase transformations in 27MnCrB5-2 steel tests during continuous cooling

The goal of the research was to analyze the acoustic emission signal recorded during heat treatment. On a special stand, samples prepared from 27MnCrB5-2 steel were tested. The steel samples were heated to 950°C and then cooled continuously in the air. Signals from phase changes occurring during coo...

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Bibliographic Details
Published in:Bulletin of the Polish Academy of Sciences. Technical sciences 2021, Vol.69 (6), p.139389-139389
Main Authors: Trafarski, Andrzej, Łazarska, Małgorzata, Ranachowski, Zbigniew
Format: Article
Language:English
Subjects:
acoustic emission
Acoustic emission testing
Acoustic microscopy
Acoustics
Artificial neural networks
Bainite
continuous cooling
Emission analysis
Heat treatment
microstructure
phase transformation
Phase transitions
ultrasonics
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Summary:The goal of the research was to analyze the acoustic emission signal recorded during heat treatment. On a special stand, samples prepared from 27MnCrB5-2 steel were tested. The steel samples were heated to 950°C and then cooled continuously in the air. Signals from phase changes occurring during cooling were recorded using the system for registering acoustic emission. As a result of the changes, Widmanstätten ferrite and bainite structures were observed under a scanning microscope. The recorded acoustic emission signal was analyzed and assigned to the appropriate phase transformation with the use of artificial neural networks.
ISSN:2300-1917
0239-7528
2300-1917
DOI:10.24425/bpasts.2021.139389