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Cottrell Cosegregations of Carbon and Hydrogen: Characteristics and Role in the Strain Aging and Embrittlement of Steelsстатья
- Авторы: Nechaev Yu S., Denisov E.A., Shurygina N.A., Cheretaeva A.O., Morozov N.S., Filippova V.P., Alexandrova N.M.
- Журнал: Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
- Том: 17
- Номер: 6
- Год издания: 2023
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 1395
- Последняя страница: 1404
- DOI: 10.1134/s1027451023060393
- Аннотация: This study investigates the characteristics of phase-like Cottrell atmospheres, which are carbohydride-like cosegregations of carbon and hydrogen, present at dislocations within the martensitic and ferritic components of high-strength austenitic steel with transformation-induced plasticity. The research addresses concerns related to aging, hydrogen embrittlement, and the degradation of certain steels during operational use. A key focus is placed on the development of an in-depth processing technique and analysis of the thermal-desorption spectra of hydrogen across several steel samples and iron (used as a reference material). The investigation involves employing thermodynamic analysis and a methodology for determining the thermodynamic parameters, including hydrogen concentrations, activation energies, and desorption-process rate constants. Additionally, the study aims to identify the nature of hydrogen traps by analyzing comprehensive thermal-desorption data. These findings are then compared with theoretical data and corresponding information obtained through three-dimensional atomic-probe tomography. The results demonstrate the potential formation of Cottrell carbohydride-like cosegregations of carbon and hydrogen at dislocations in both martensitic and ferritic phases within high-strength austenitic steel exhibiting high plasticity due to transformation. The research provides novel insights into the binding energies of hydrogen associated with carbohydride-like cosegregations of carbon and hydrogen along dislocations in these martensitic and ferritic phases.
- Добавил в систему: Морозов Николай Сергеевич