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Content available Application of acoustic emission to the analysis of phase transformations in 27MnCrB5-2 steel tests during continuous cooling
Trafarski Andrzej, Łazarska Małgorzata, Ranachowski Zbigniew
Bulletin of the Polish Academy of Sciences. Technical Sciences
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2021
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Vol. 69, nr 6
art. no. e139389
EN
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.
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