Structure and creep of stainless steels dispersion-strengthened with yttrium oxides

Authors
Shalaev, VI Sagaradze, VV Kochetkova, TN Vil'danova, NF Tian, Y Sun, JG Chung, V
Citation
Vi. Shalaev et al., Structure and creep of stainless steels dispersion-strengthened with yttrium oxides, PHYS MET R, 91(3), 2001, pp. 314-320
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science",Metallurgy
Journal title
PHYSICS OF METALS AND METALLOGRAPHY
ISSN journal
0031918X → ACNP
Volume
91
Issue
3
Year of publication
2001
Pages
314 - 320
Database
ISI
SICI code
0031-918X(200103)91:3<314:SACOSS>2.0.ZU;2-Z
Abstract
It is shown that the high strength (sigma (0.2) = 1272 MPa) of mechanically alloyed ODS steels annealed at 1100 degreesC with a structure of polygoniz ed ferrite is due to the high density of dislocations and dispersed Y2TiO5 oxide particles with an average size of about 2-3 nm. The ODS steels have a considerably higher creep resistance and rupture strength at increased str esses (150-450 MPa) and temperatures (600-700 degreesC) in comparison with the conventional Kh16N15M3TF and 12Kh13M2BRF radiation-resistant reactor st eels.