| Název: | Improving the high-temperature properties of a new generation of Fe-Al-O oxide-precipitation-hardened steels |
| Autoři: | Khalaj, Omid Jirková, Hana Janda, Tomáš Kučerová, Ludmila Studený, Tomáš Svoboda, Jiří |
| Citace zdrojového dokumentu: | KHALAJ, O., JIRKOVÁ, H., JANDA, T., KUČEROVÁ, L., STUDENÝ, T., SVOBODA, J. Improving the high-temperature properties of a new generation of Fe-Al-O oxide-precipitation-hardened steels. Materiali in Technologije, 2019, roč. 53, č. 4, s. 495-504. ISSN 1580-2949. |
| Datum vydání: | 2019 |
| Nakladatel: | Inst za kovinske materiale in technologie |
| Typ dokumentu: | článek article |
| URI: | 2-s2.0-85069663963 http://hdl.handle.net/11025/35585 |
| ISSN: | 1580-2949 |
| Klíčová slova v dalším jazyce: | OPH alloys;grain growth;microstructure;Fe-Al;Al2O3 |
| Abstrakt v dalším jazyce: | Increasing efficiency in power engineering is conditional on the improvement of the high-temperature properties of structuralmaterials. A new Fe-Al-O Oxide-Precipitation-Hardened (OPH) steel was developed by the authors to dissolve the requiredamount of O in the matrix during mechanical alloying and let a fine dispersion of Al oxides precipitate during the hot consoli-dation. Compared to oxide-dispersion-strengthened (ODS) ferritic steels, excellent oxidation resistance is guaranteed by using10 % Al in the matrix. To improve the high-temperature properties of OPH, a series of thermomechanical tests was performed toinvestigate the recrystallization and grain growth of the microstructures by metallographic analysis. The results show that theheat treatment has a significant influence on the mechanical properties of OPH as well as the microstructure andrecrystallization of the grains. It decreased the UTS to almost 25 % of the initial state, while causing plastic deformation. Also,grain growth was observed up to 16 %, even with no annealing and applied deformation, which shows a good structure-orientedmaterial. |
| Práva: | © Inst za kovinske materiale in technologie |
| Vyskytuje se v kolekcích: | Články / Articles (RTI) OBD |
Soubory připojené k záznamu:
| Soubor | Velikost | Formát | |
|---|---|---|---|
| khalaj.pdf | 4,67 MB | Adobe PDF | Zobrazit/otevřít |
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