Abstract
Fatigue tests and measurements of the volumetric distribution of metallurgical hydrogen in specimens cut from rolled I-beam 60Sh3 made of steel 10KhSND were carried out. Fatigue tests show a 20% reduction in fatigue limits compared to similar sheet material. On the fractures of the samples, there are flock-like defects in the areas of interface of the flanges of the I-beam, or the so-called zones of difficult deformation. The concentration of metallurgical hydrogen is unevenly distributed and varies from 0.17 ppm to 1.8 ppm. Large concentrations of hydrogen are observed in the zones of difficult deformation, which indicates the hydrogen nature of the metal defects observed at the fracture. The result of mechanical tests and hydrogen diagnostics is a manufacturing defect of rolled products that cannot be corrected. Hydrogen diagnostics using metallurgical hydrogen (without hydrogen charging samples) takes tens of times less time than mechanical tests, and gives an adequate result.
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Article history
- ReceivedUntil the next stage: 80 days
- RevisedUntil the next stage: 57 days
- AcceptedUntil the next stage: 22 days
- Published
About the authors
Vladimir Polyanskiy
Director
Victor Loginov
Engineer, Applied Research Laboratory
Yuriy A. Yakovlev
Head of Applied Research Laboratory
Anatoly Polyanskiy
Director
Vecheclav Olekov
Head of testing laboratory
Gregory Rostovykh
Senior researcher
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May be shared and adapted, provided appropriate credit is given. Copyright © 2022 Vladimir Polyanskiy, Victor Loginov, Yuriy A. Yakovlev, Anatoly Polyanskiy, Vecheclav Olekov, Gregory Rostovykh.
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