Results 71 to 80 of about 761 (201)

Study of cleavage fracture in ferritic stainless steels Part II: Cleavage micro-mechanisms and critical stresses

open access: yes, 2023
International audienceCleavage fracture and the mechanisms involved in different ferritic steel model microstructures are investigated according to grain sizes, precipitates and solute atoms in the matrix. For each case, one of these parameters is varied.
Jacquet, Lucie   +5 more
core   +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

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

Effect of Bulk Phosphorus Content on Hardening, Non-Equilibrium Segregation and Embrittlement in Neutron Irradiated Iron-Based Alloys

open access: yes, 2000
The effect of bulk P contents on hardening, non-equilibrium intergranular segregation and embrittlement has been studied in Mn-doped ferritic alloys subjected to neutron irradiation (E>0.1MeV: fluence of 1 × 1025 n/m2 at 711K for 2120 h) or ...
Y. Nishiyama, T. E. Bloomer, J. Kameda
core   +1 more source

Recent Improvements in Size Effects Correlations for DBTT and USE of Ferritic Steels

open access: yes, 1993
Currently available correlations for the effects of specimen size on the USE were developed for relatively ductile steels and will not serve as well when the steels become embrittled.
Garner, F. A.   +3 more
core  

Neutron irradiation effects on the ductile-brittle transition of ferritic/martensitic steels [PDF]

open access: yes, 1997
Ferritic/martensitic steels such as the conventional 9Cr-1MoVNb (Fe-9Cr-1Mo-0.25V-0.06Nb-0.1C) and 12Cr-1MoVW (Fe-12Cr-1Mo-0.25V-0.5W-0.5Ni-0.2C) steels have been considered potential structural materials for future fusion power plants.
Klueh, R.L., Alexander, D.J.
core  

Analysis of Ductile-to-Brittle Transition Temperature of Mild Steel

open access: yes, 2021
The Ductile-to-Brittle Transition Temperature (DBTT) is a phenomenon that is widely observed in metals. Below critical temperature (DBTT), the material suddenly loss ductility and becomes brittle.
Mr. Gorakshanath Shivaji Kale   +2 more
core   +2 more sources

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

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

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