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ODS EUROFER Steel Strengthened by Y-(Ce, Hf, La,\nSc, and Zr) Complex Oxides
- 1.0510160 - ÚFM 2020 RIV CH eng J - Journal Article
Husák, Roman - Hadraba, Hynek - Chlup, Zdeněk - Heczko, Milan - Kruml, Tomáš - Puchý, V.
ODS EUROFER Steel Strengthened by Y-(Ce, Hf, La,
Sc, and Zr) Complex Oxides.
Metals. Roč. 9, č. 11 (2019), č. článku 1148. ISSN 2075-4701. E-ISSN 2075-4701
R&D Projects: GA ČR(CZ) GA17-23964S
Institutional support: RVO:68081723
Keywords : oxide dispersion-strengthened steel * low-activation steel * mechanical alloying * spark plasma sintering * complex oxide
OECD category: Materials engineering
Impact factor: 2.117, year: 2019
Method of publishing: Open access
https://www.mdpi.com/2075-4701/9/11/1148/htm
Oxide dispersion-strengthened (ODS) materials contain homogeneous dispersions of
temperature-stable nano-oxides serving as obstacles for dislocations and further pinning of grain
boundaries. The strategy for dispersion strengthening based on complex oxides (Y-Hf, -Zr, -Ce, -La)
was developed in order to refine oxide dispersion to enhance the dispersion strengthening e ect.
In this work, the strengthening of EUROFER steel by complex oxides based on Y and elements of
the IIIB group (lanthanum, scandium) and IVB group (cerium, hafnium, zirconium) was explored.
Interparticle spacing as a dispersoid characteristic appeared to be an important factor in controlling the
dispersion strengthening contribution to the yield strength of ODS EUROFER steels. The dispersoid
size and average grain size of ODS EUROFER steel were altered in the ranges of 5–13 nm and
0.6–1.7 m, respectively. Using this strategy, the yield strength of the prepared alloys varied between
550 MPa and 950 MPa depending on the doping element
Permanent Link: http://hdl.handle.net/11104/0302522
Number of the records: 1