Critical Redistribution of Nitrogen in the Austenitic Cr-Mn Steel under Severe Plastic Deformation
| Autor: | Yurii Ustyugov, K. A. Kozlov, K. A. Lyashkov, Vladimir Zavalishin, N. V. Kataeva, V. V. Sagaradze, V. A. Shabashov, A. E. Zamatovskii |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science Deformation (meteorology) Nitride Article nitrogen severe plastic deformation mechanical alloying Metal General Materials Science Composite material Austenite Microscopy QC120-168.85 Mössbauer spectroscopy QH201-278.5 technology industry and agriculture Atmospheric temperature range Engineering (General). Civil engineering (General) Nanocrystalline material TK1-9971 Descriptive and experimental mechanics visual_art visual_art.visual_art_medium Electrical engineering. Electronics. Nuclear engineering TA1-2040 Severe plastic deformation Solid solution |
| Zdroj: | Materials; Volume 14; Issue 23; Pages: 7116 Materials, Vol 14, Iss 7116, p 7116 (2021) Materials |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma14237116 |
| Popis: | A narrow temperature range of changes in the mechanism and kinetics of structural-phase transformations during mechanical alloying under deformation in rotating Bridgman anvils was determined by the methods of Mössbauer spectroscopy, electron microscopy, and mechanical tests in the high-nitrogen chromium-manganese steel FeMn22Cr18N0.83. The experimentally established temperature region is characterized by a change in the direction of nitrogen redistribution—from an increase in the N content in the metal matrix during cold deformation to a decrease with an increase in the temperature and degree of severe plastic deformation. The change in the direction of nitrogen redistribution is due to the acceleration of the decomposition of a nitrogen-supersaturated solid solution of austenite with the formation of secondary nanocrystalline nitrides. The presence of a transition region for the mechanism of structural-phase transitions is manifested in the abnormal behavior of the mechanical properties of steel. |
| Databáze: | OpenAIRE |
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