| 2025 №04 (07) |
DOI of Article 10.37434/tpwj2025.04.01 |
2025 №04 (02) |
The Paton Welding Journal, 2025, #4, 3-6 pages
Features of initiation and propagation of fatigue cracks under cyclic mechanical loads on surfaced plates
I.O. Ryabtsev1, V.V. Knysh1, Yu. Kudryavtsev2, A.A. Babinets1, S.O. Solovej1, I.I. Ryabtsev1, I.P. Lentyugov1
1E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: ryabtsev39@gmail.com2Structural Integrity Testing and Technologies (SINTEC), Inc. Suite #469, 1136 Centre Street, Unit 3, Thornhill, ON L4J 3M8, Canada
Abstract
The features of initiation and propagation of fatigue cracks were investigated at cyclic mechanical loads on specimens, deposited in one wear-resistant layer or with an additional plastic sublayer. Fundamentally different nature of propagation of fatigue cracks was revealed in the specimens, deposited with a ductile sublayer of low-carbon steel compared to the specimens without a sublayer. In the specimens deposited with a ductile sublayer unlike the specimens deposited without a sublayer when the main fatigue crack passed through the deposited layer and the sublayer, at the boundary of the wear-resistant layer and the plastic sublayer, as well as the sublayer and the base metal, branching and a kind of inhibition of the main fatigue crack are observed.
Keywords: arc surfacing, cyclic loading, fatigue life, fatigue cracks, single-layer surfacing, multilayer surfacing, wear-resistant layer, ductile sublayer
Received: 26.08.2024
Received in revised form: 24.10.2024
Accepted: 29.04.2025
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