Publication detail

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

KOCICH, R. KUNČICKÁ, L. BENČ, M

English title

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

Type

journal article in Web of Science

Language

en

Original abstract

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.

English abstract

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.

Keywords in English

Rotary swaging;Direct consolidation;Oxide dispersion strengthening;Ferritic steel;Microstructure

Released

15.12.2023

Publisher

ELSEVIER SCIENCE INC

ISSN

1873-4979

Volume

353

Number

135276

Pages count

4

BIBTEX


@article{BUT184767,
  author="Radim {Kocich} and Lenka {Kunčická} and Marek {Benč},
  title="Development of microstructure and properties within oxide dispersion strengthened steel directly consolidated by hot rotary swaging",
  year="2023",
  volume="353",
  number="135276",
  month="December",
  publisher="ELSEVIER SCIENCE INC",
  issn="1873-4979"
}