Survey of oxide candidate for advanced 9%, 14% and 17%Cr ODS steels for fusion applications

0481392 - ÚFM 2018 RIV CH eng J - Journal Article
Hadraba, Hynek - Husák, Roman - Stratil, Luděk - Šiška, Filip - Chlup, Zdeněk - Puchý, V. - Michalička, J.
Survey of oxide candidate for advanced 9%, 14% and 17%Cr ODS steels for fusion applications.
Fusion Engineering and Design. Roč. 124, NOV (2017), s. 1028-1032. ISSN 0920-3796. E-ISSN 1873-7196
R&D Projects: GA ČR(CZ) GA14-25246S; GA ČR GJ15-21292Y
Institutional support: RVO:68081723
Keywords : ODS steel * Mechanical alloying * SPS * Tensile behavior * Hardness
OECD category: Materials engineering
Impact factor: 1.437, year: 2017

The paper describes a preparation of 9%Cr, 14%Cr and 17%Cr ODS steel by means of mechanical alloying and spark plasma sintering. The two ways of oxide dispersion creation were verified: direct adding of oxide powders (alumina or yttria) and internal oxidation of oxidizable elements (aluminium or yttrium) by adding the gaseous oxygen to the alloyed powder. ODS steels prepared by both methods have comparable mechanical properties, therefore it was proven that the internal oxidation method can be used for a preparation of the ODS steel. This is especially applicable in the case of hard and abrasive oxides (e.g. alumina) which do not erode during mechanical alloying and do not create fine dispersion.
Permanent Link: http://hdl.handle.net/11104/0276963