10.14489/td.2026.02.pp.004-014

2026, 02 February

DOI: 10.14489/td.2026.02.pp.004-014

Barat V. A., Marchenkov A. Yu., Poroikov A. Yu., Ushanov S. V., Sviridov G. B., Lavrik N. V., Eremin D. V., Karpova M. V.
STUDY OF ACOUSTIC EMISSION DURING CYCLIC TENSION OF DISSIMILAR WELDED JOINTS OF 12X18N10T AND GRADE 20 STEEL
(pp. 4-14)

Abstract. The paper is devoted to the study of acoustic emission (AE) under cyclic loading of dissimilar welded joints. The object of the study is carbide and decarburized diffusion interlayers that are formed during welding of pearlitic and austenitic steels, as well as during subsequent operation of such dissimilar joints under high temperatures. The paper presents the results of an experimental study on cyclic loading of samples of dissimilar welded joints with the registration of AE data and measurement of local deformation fields using the digital image correlation (DIC) method. Loading was carried out in the elastic region at a stress close to the operational values. Analysis of the deformation distribution fields over the surface of the samples showed that welded joints with diffusion interlayers have increased deformation values in the interlayer zone, while according to the AE data, a pronounced location cluster is formed in the same area on the location scheme. According to the values of the AE parameters, the level of activity and amplitudes of AE pulses in samples with diffusion layers is higher than in defect-free samples.

Keywords: dissimilar welded joints, acoustic emission, diffusion interlayres.

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V. A. Barat (Federal State Budgetary Educational Institution of Higher Education “National Research University “MEI”. Moscow, Russia, “Interunis-IT” LLC, Moscow, Russia)
A. Yu. Marchenkov, A. Yu. Poroikov, S. V. Ushanov, G. B. Sviridov, N. V. Lavrik, D. V. Eremin, M. V. Karpova (Federal State Budgetary Educational Institution of Higher Education “National Research University “MEI”. Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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