Results 71 to 80 of about 867 (170)

Enhanced thermal-mechanical properties of rolled tungsten bulk material reinforced by in situ nanosized Y–Zr–O particles

open access: yesNuclear Engineering and Technology
Tungsten is the most promising plasma facing material for fusion reactors. Rolled W–Y2(Zr)O3 bulk material has been successfully produced in this study for future fusion engineering applications.
Gang Yao   +4 more
doaj   +1 more source

Irradiation effect on impact fracture behavior of A508-3 steel in ductile-to-brittle transition range

open access: yes, 2019
The mechanical performance of reactor pressure vessel (RPV) materials is an important factor in determining the safety and economics of the operation of a nuclear power plant.
Berto, Filippo   +6 more
core   +2 more sources

Strategies to lower the DBTT of RAFM steels acting on chemical composition and thermomechanical treatments

open access: yesNuclear Materials and Energy
ENEA and its industrial partner Rina Consulting-CSM (RINA CSM) contribute to the Eurofusion programme in the development of innovative RAFM steels able to withstand the critical low temperature (280-300 °C in the “water-cooling” option) foreseen for the ...
C. Cristalli   +4 more
doaj   +1 more source

Development of innovative steels and thermo-mechanical treatments for DEMO high operating temperature blanket options

open access: yesNuclear Materials and Energy, 2018
Among the options currently taken into account for the realization of the first DEMO reactor there are the “helium-cooled” and the “dual coolant” breeding blanket.
C. Cristalli   +5 more
doaj   +1 more source

Effect of bonding temperature on tensile behaviors and toughening mechanism of W/(Ti/Ta/Ti) multilayer composites

open access: yesHigh Temperature Materials and Processes
The inherent low-temperature brittleness has restricted the application of tungsten materials. One option for enhancing the tungsten fracture toughness is to use tungsten-based layered composites.
Liu Rui   +4 more
doaj   +1 more source

Evolution of Microstructure and Mechanical Properties of Steam Generator Material After Long-Term Operation in Nuclear Power Plant

open access: yesMetals
The microstructural evolution and mechanical properties of WWER 440 steam generator steel GOST 22K after long-term operation were thoroughly examined in this study. The samples were taken directly from a steam generator using the small punch test method.
David Slnek   +6 more
doaj   +1 more source

Effects of Yttrium on Microstructure Stability and Tensile Properties of China Low Activation Martensitic Steel

open access: yesMetals, 2019
This study investigated the microstructural stability and mechanical properties exhibited by China low activation martensitic (CLAM) steels with different yttrium (Y) contents over 3000 h of aging at 550 °C.
Guoxing Qiu   +6 more
doaj   +1 more source

Prediction of fracture toughness by application of stress distribution T-scaling method under compressive residual stress

open access: yesNihon Kikai Gakkai ronbunshu, 2017
The fracture toughness Jc of the material in the ductile to brittle transition temperature (DBTT) region shows test specimen thickness (TST) effect and temperature dependence, and apparently increases when compressive residual stress is applied.
Kenichi ISHIHARA   +2 more
doaj   +1 more source

Protective claddings for high strength chromium alloys [PDF]

open access: yes, 1971
The application of a Cr-Y-Hf-Th alloy as a protective cladding for a high strength chromium alloy was investigated for its effectiveness in inhibiting nitrogen embrittlement of a core alloy.
Collins, J. F.
core  

Ductile–Brittle Transition Mechanism and Dilute Solution Softening Effect of Body-Centered Cubic Metals

open access: yesMetals
Body-centered cubic (BCC) metals, extensively utilized in low-alloy high-strength steels and heat-resistant alloys, exhibit a pronounced ductile–brittle transition (DBT) at cryogenic temperatures, marked by a well-defined yet narrow ductile–brittle ...
Jie Zhang   +4 more
doaj   +1 more source

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