Effect of Strain Range and Hold Time on High Temperature Fatigue Life of G17CrMoV5-10 Cast Alloy Steel
Anna Polnik
- Warsaw, Poland
- Faculty of Materials Science and Engineering, Warsaw University of TechnologyWarsaw, Poland
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, , Sławomir Czarnewicz
Łukasiewicz Research Network, Institute of AviationWarsaw, Poland
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oraz Zbigniew Pakieła
Faculty of Materials Science and Engineering, Warsaw University of TechnologyWarsaw, Poland
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28 lis 2023
O artykule
Kategoria artykułu: research article
Data publikacji: 28 lis 2023
Zakres stron: 1 - 7
DOI: https://doi.org/10.2478/fas-2022-0001
Słowa kluczowe
© 2022 Anna Polnik et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
In this work, cast steel G17CrMoV5-10 was investigated. The material subject to investigation as part of this study is commonly used to manufacture steam turbine casings. Modern steam turbines operate under elevated temperature and complex oscillated loads. Thus, the focus of this study was to investigate material under behavior during low cycle fatigue (LCF) test performance at 500°C with and without hold time in tension. During all types of test, cyclic softening of cast steel was noticed. Increasing of total strain rate and applying hold time significantly reduce fatigue life. During hold time, due to temperature and tension the material creep what is confirmed by increasing inelastic stain accommodation.