PSI - Issue 40

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

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 40 (2022) 275–282

© 2022 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 the15th International Conference on Mechanics, Resources and Diagnostics of Materials and Structures. Abstract On the basis of experimental, numerical and analytical results, functional dependences of such crack resistance characteristics as critical opening of cracks in the temperature range from 300 K to 77 K and thickness of welded joints of the steels under study were obtained. The functional dependences of the parameters of the kinetic diagrams of low-cycle fracture on the mechanical properties of the material for a wide class of welded joints of austenitic stainless cyclically stable steels are given. © 2022 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 the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures. Keywords: local elastic-plastic deformations, anisotropy of properties of a material, speed of development low-cycle cracks, superficial inclined semi elliptical cracks, factor of intensity of strains, cryogenic temperature, factors of the crack resistance, critical crack openings. 1. Introduction The results of laboratory studies of standard and non-standard samples from widely used austenitic stainless steel 08Kh18N10Т are presented and analyzed. Tests were carried out on flat standard tensile samples and on non standard tubular welded and non-welded samples with cracks. During the tests, forces, movements and local strains 15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures Crack resistance of welded joints of austenitic steel at cryogenic temperature. N. A. Makhutov , I. V. Makarenko* , L. V. Makarenko Mechanical Engineering Research Institute, 4 Maly Kharitonievsky lane, Moscow, 101990, Russia

* Corresponding author. Tel.: +7-449-135-6298; fax: +7-449-135-6298. E-mail address: I.V.Makarenko@yandex.ru

2452-3216 © 2022 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 the15th International Conference on Mechanics, Resource and Diagnostics of Materials and Structures.

2452-3216 © 2022 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 the15th International Conference on Mechanics, Resources and Diagnostics

of Materials and Structures. 10.1016/j.prostr.2022.04.037