PSI - Issue 50

ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 Structural Integrity Procedia 00 (2022) 000 – 000 Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Available online at www.sciencedirect.com ScienceDirect

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

Procedia Structural Integrity 50 (2023) 33–39

16th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures (MRDMS 2022) 16th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures (MRDMS 2022)

Acoustic characteristics of deformable metals Svetlana Barannikova*, Mikhail Nadezhkin, Polina Iskhakova Institute of Strength Physics and Materials Science SB RAS, 2/4, pr. Akademicheskii, Tomsk, 634055, Russia Acoustic characteristics of deformable metals Svetlana Barannikova*, Mikhail Nadezhkin, Polina Iskhakova Institute of Strength Physics and Materials Science SB RAS, 2/4, pr. Akademicheskii, Tomsk, 634055, Russia

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers Abstract The stages of plastic flow in Fe-18 wt.% Cr-10 wt.% Ni structural steel were studied by performing non-destructive testing. In particular, the acoustic parameters of the steel were measured via uniaxial tensile tests. According to the changes in the velocity of propagation and attenuation of ultrasound in a wide temperature range, the stages of plastic deformation and destruction were clearly distinguished. Based on the results of this study, a non-destructive testing parameter characterizing the transition to the pre-destruction stage of the material was proposed. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers Keywords: mecanical testing; non-destructive testing; stainless steels; ultrasonic Rayleigh waves; plastic deformation 1. Introduction Increasing requirements for the quality of parts imply the expansion of diagnostic and non-destructive testing methods. In that regard, the mechanical properties of the material are decisive in assessing the quality of products as well as the probability of failure along with safety and expediency of using parts under certain conditions. In this respect, relevant research is devoted to the diagnosis and control of damage in products with the aim of forecasting their operation life and reliability, both in normal and extreme operating modes. It is known that the stages of plastic deformation of metals are mainly determined by the development of the dislocation structure, which does not take into account the damage accumulation (Kobayashi (2010)). As the plastic deformation increases, the processes associated with damage accumulation in the material (e.g., pore nucleation and Abstract The stages of plastic flow in Fe-18 wt.% Cr-10 wt.% Ni structural steel were studied by performing non-destructive testing. In particular, the acoustic parameters of the steel were measured via uniaxial tensile tests. According to the changes in the velocity of propagation and attenuation of ultrasound in a wide temperature range, the stages of plastic deformation and destruction were clearly distinguished. Based on the results of this study, a non-destructive testing parameter characterizing the transition to the pre-destruction stage of the material was proposed. © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers Keywords: mecanical testing; non-destructive testing; stainless steels; ultrasonic Rayleigh waves; plastic deformation 1. Introduction Increasing requirements for the quality of parts imply the expansion of diagnostic and non-destructive testing methods. In that regard, the mechanical properties of the material are decisive in assessing the quality of products as well as the probability of failure along with safety and expediency of using parts under certain conditions. In this respect, relevant research is devoted to the diagnosis and control of damage in products with the aim of forecasting their operation life and reliability, both in normal and extreme operating modes. It is known that the stages of plastic deformation of metals are mainly determined by the development of the dislocation structure, which does not take into account the damage accumulation (Kobayashi (2010)). As the plastic deformation increases, the processes associated with damage accumulation in the material (e.g., pore nucleation and

* Corresponding author. Tel.: +7 (3822) 28-68-02 E-mail address: bsa@ispms.ru * Corresponding author. Tel.: +7 (3822) 28-68-02 E-mail address: bsa@ispms.ru

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers 2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers

2452-3216 © 2023 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the MRDMS 2022 organizers 10.1016/j.prostr.2023.10.019