Journal ArticleDOI
Phase stability of oxide dispersion-strengthened ferritic steels in neutron irradiation
TLDR
In this article, microstructural observation and microchemical analysis of oxide dispersion-strengthened ferritic steels were carried out by neutrons up to 21 dpa and showed that the original high dislocation density did not change after neutron irradiation.About:
This article is published in Journal of Nuclear Materials.The article was published on 2002-12-01. It has received 44 citations till now. The article focuses on the topics: Oxide & Laves phase.read more
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Recent Developments in Irradiation-Resistant Steels
TL;DR: In this paper, an emerging class of nanostructured ferritic alloys (NFAs) have been proposed for high-performance structural alloys with outstanding properties that are sustained under long-term service in ultrasevere environments.
Journal ArticleDOI
On the role of alloy composition and processing parameters in nanocluster formation and dispersion strengthening in nanostuctured ferritic alloys
TL;DR: In this paper, an extensive experimental study characterizing the sequence of events that lead to the formation of a very high density of Y-Ti-O solute nanoclusters (NC) in mechanically alloyed, hot isostatically pressed ferritic stainless steels is reported.
Journal ArticleDOI
Radiation response of a 9 chromium oxide dispersion strengthened steel to heavy ion irradiation
Todd R. Allen,Jian Gan,James I. Cole,Michael K Miller,Jeremy T Busby,S. Shutthanandan,Suntharampillai Thevuthasan +6 more
TL;DR: In this article, nanometer-sized Y-Ti-O nanoclusters were used as a strengthening mechanism for ferritic-martensitic alloys to operate at higher temperatures than traditional FM steels.
Journal ArticleDOI
Microstructural evolution of Y2O3 and MgAl2O4 ODS EUROFER steels during their elaboration by mechanical milling and hot isostatic pressing
TL;DR: In this paper, different ODS EUROFER steels reinforced with Y2O3 and MgAl2O4 were elaborated by mechanical milling and hot isostatic pressing.
Journal ArticleDOI
Lead-Cooled Fast Reactor Systems and the Fuels and Materials Challenges
T. R. Allen,D. C. Crawford +1 more
TL;DR: In this article, three lead-cooled fast-reactor (LFR) systems with varying levels of concept maturity are described to illustrate their associated fuels and materials challenges, and the feasibility of such systems will primarily rest on development or selection of fuels and material suitable for use with corrosive lead or lead-bismuth.
References
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Journal ArticleDOI
Alloying design of oxide dispersion strengthened ferritic steel for long life FBRs core materials
Shigeharu Ukai,M. Harada,Hirokazu Okada,M. Inoue,S. Nomura,Sakae Shikakura,Kazutaka Asabe,Toshio Nishida,Masayuki Fujiwara +8 more
TL;DR: In this paper, the α to γ transformation in ODS martensitic steel has been successfully achieved by introducing the α-to-γ transformation in 13Cr-3W ODS ferritic steels.
Journal ArticleDOI
Low-Temperature Phase Relationships in the System ZrO2-TiO2
Anna E. McHALE,Robert S. Roth +1 more
TL;DR: In this paper, the authors have shown that solid-solution formation with SnO/sub 2/, as in commercial dielectric compositions, is effective in stabilizing the high-temperature structure of these materials.
Journal ArticleDOI
Dispersion behaviour of oxide particles in mechanically alloyed ODS steel
T. Okuda,M. Fujiwara +1 more
Journal ArticleDOI
Development of Oxide Dispersion Strengthened Ferritic Steels for FBR Core Application, (I)
Shigeharu Ukai,Toshio Nishida,Hirokazu Okada,Takanari Okuda,Masayuki Fujiwara,Kazutaka Asabe +5 more
Abstract: As to an oxide dispersion strengthened (ODs) ferritic steel cladding as the promising candidate for long-life core materials of the fast reactors, previously fabricated claddings had inferior internal creep rupture strength in hoop direction and inferior formability due to less ductility. Those unexpected features of ODs claddings are substantially ascribed to the needle-like grain structure excessively elongated along the forming direction. Controlling the grain morphology by applying the recrystallization method to ODs ferritic steel made possible to improve those inferior features. The ranges of Y2O3 and excessive oxygen contents for possibly cold-rolling and recrystallization were revealed, and the effects of extruded temperature and deformation texture on recrystallization characteristics were evaluated. The recrystallized ODs ferritic steel showed superior internal creep rupture strength and ductility. It was demonstrated from those results that cold-rolling manufacturing of ODs cladding at room tem...
Journal ArticleDOI
Tube manufacturing and mechanical properties of oxide dispersion strengthened ferritic steel
Shigeharu Ukai,M. Harada,Hirokazu Okada,M. Inoue,S. Nomura,Sakae Shikakura,Toshio Nishida,Masayuki Fujiwara,Kazutaka Asabe +8 more
TL;DR: In this article, fabrication tests of thin-walled cladding tubes were carried out from a viewpoint of future industrial manufacturing, and the manufactured claddings within the specification limit exhibited a superior high temperature strength and sufficient Charpy impact properties.
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Perspective of ODS alloys application in nuclear environments
Shigeharu Ukai,Masayuki Fujiwara +1 more