Development of oxide dispersion strengthened ferritic steels for fusion

Mukhopadhyay, D.K.; Froes, F. H.; Gelles, D.S.

doi:10.1016/s0022-3115(98)00188-3

Cited by 137 publications

(55 citation statements)

References 4 publications

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“…Figure 6 shows the creep rupture strength of the 12YWT alloy as Larson-Miller plot in simple creep testing comparing with other data. 4,14,[24][25][26][27] This result also shows the same Table 2. Dispersion parameters and void-hardening stress evaluated from transmission electron micrographs.…”

Section: ϫ3supporting

confidence: 76%

“…It has been reported by a number of researchers [1][2][3][4][5][6][7][8][9] that MA ODS alloys possess excellent creep strength at high temperatures and high resistance to swelling in radioactive radiation. Oxide dispersion strengthened (ODS) ferritic alloys produced by mechanical alloying (MA) have been found to be effective for increasing high-temperature strength.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Ti and W on the Mechanical Properties and Microstructure of 12% Cr Base Mechanical-alloyed Nano-sized ODS Ferritic Alloys

et al. 2003

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Section: ϫ3supporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

Effect of Ti and W on the Mechanical Properties and Microstructure of 12% Cr Base Mechanical-alloyed Nano-sized ODS Ferritic Alloys

et al. 2003

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“…This steel is considered promising for use as cladding material in the long-life core of liquid metal fast reactor fuel pins [1][2][3][4][5] as well as for a low activated fusion reactor material. 6) In the ODS ferritic steels with a basic composition of FeCr-W-Ti-Y 2 O 3 , grain morphology control by recrystallization has been shown to be indispensable not only for softening the material hardened in the process of cold-rolling but also suppressing the strength degradation by grain boundary sliding. [7][8][9][10] As an another approach, phase transformation from ferrite-martensite (α) to austenite (γ ) was demonstrated to be capable method for controlling the grain morphology by using the extruded bars of ODS martensitic steels.…”

Section: Introductionmentioning

confidence: 99%

Development of 9Cr-ODS Martensitic Steel Claddings for Fuel Pins by means of Ferrite to Austenite Phase Transformation.

Ukai¹,

Mizuta²,

Fujiwara

et al. 2002

J. Nucl. Sci. Technol.

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For use as fuel cladding of liquid metal fast reactors, Fe-0.12C-9Cr-2W ODS martensitic steel claddings were developed by cold-rolling under the softened ferrite phase induced by slow cooling from austenite phase, subsequently by ferrite to austenite phase transformation to break up substantially elongated grains produced by cold-rolling at the final heat-treatment. The produced claddings showed noticeable improvement in tensile and creep rupture strength that are considerably superior to PNC-FMS and even austenitic PNC316 at higher temperature and extended time to rupture. The strength improvement is mainly attributed to titanium addition in ODS martensitic steels through its reduction of Y 2 O 3 particle size and shortening inter-particles spacing. The behavior of oxide particle size reduction is associated with stoichiometry between Y 2 O 3 and TiO 2 .

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“…The MA of steel powders with yttria (Y 2 O 3 ) particles successfully fabricated nanostructured ferritic ODS alloy [9,12], and the microstructural evolution of yttria particles in ODS steel during MA was investigated [9,10,13]. Also, the radiation stability [14], high-temperature mechanical properties [15,16], applications to reactor [17][18][19] of ODS ferritic steels with yttria have been reported.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Oxide Dispersion Behavior of Yttria in Metal Matrix of MA956 Alloy through High-Energy Milling and Hot Press Sintering

Swain

Han

Kim

et al. 2017

Archives of Metallurgy and Materials

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MA956 (Fe-Cr-Al) alloy powder was high-energy ball milled with various amount of yttria contents (1,2,3, and 4 wt.%) to fabricate an oxide dispersion strengthened alloy. The milled powders were then consolidated using hot press sintering at 1150°C. The surface morphology and crystal structure of MA956 powder during the high-energy milling depending on the yttria contents was investigated using particle size analysis, X-ray diffraction, and scanning electron microscopy. The microstructural analysis of sintered alloy was performed using transmission electron microscopy and energy dispersive spectroscopy to evaluate the dispersion behavior of yttrium oxide. The results showed that, as yttria contents increased, the oxide particles became finer and are uniformly distributed during the high-energy milling. However, after the sintering, the oxide particles were coarsened with more than 3 wt.% of yttria addition.

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Development of oxide dispersion strengthened ferritic steels for fusion

Cited by 137 publications

References 4 publications

Effect of Ti and W on the Mechanical Properties and Microstructure of 12% Cr Base Mechanical-alloyed Nano-sized ODS Ferritic Alloys

Effect of Ti and W on the Mechanical Properties and Microstructure of 12% Cr Base Mechanical-alloyed Nano-sized ODS Ferritic Alloys

Development of 9Cr-ODS Martensitic Steel Claddings for Fuel Pins by means of Ferrite to Austenite Phase Transformation.

Understanding the Oxide Dispersion Behavior of Yttria in Metal Matrix of MA956 Alloy through High-Energy Milling and Hot Press Sintering

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