Development of microstructure and properties within oxide dispersion strengthened steel directly consolidated by hot rotary swaging

0577266 - ÚFM 2024 RIV NL eng J - Článek v odborném periodiku
Kocich, R. - Kunčická, Lenka - Benc, M.
Development of microstructure and properties within oxide dispersion strengthened steel directly consolidated by hot rotary swaging.
Materials Letters. Roč. 353, DEC (2023), č. článku 135276. ISSN 0167-577X. E-ISSN 1873-4979
Grant CEP: GA ČR GX21-02203X
Institucionální podpora: RVO:68081723
Klíčová slova: Rotary swaging * Direct consolidation * Oxide dispersion strengthening * Ferritic steel * Microstructure
Obor OECD: Materials engineering
Impakt faktor: 3, rok: 2022
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S0167577X23014611?via%3Dihub

Steels strengthened with fine oxides maintain favourable mechanical properties at high temperatures. This unique study evaluates the effects of direct consolidation of mechanically alloyed powders of ferritic steel and Y2O3 nanooxides by hot rotary swaging (multiple swaging ratios) on microstrutcures and mechancial properties of final rods. Direct consolidation of the steel powder by the proposed method was successful at the swaging ratio 1.0. However, the quality of consolidation improved with increasing the swaging ratio to 1.4, and finally to 1.8 (no visible pores). The microstructure of the rod processed with swaging ratio 1.8 exhibited homogeneous dispersion of oxide particles and featured ultra-fine (UF) grains, its average Vickers microhardness exceeded 700 HV1.
Trvalý link: https://hdl.handle.net/11104/0346487