Results 1 to 10 of about 1,100 (164)

Fundamental Mechanisms for Irradiation-Hardening and Embrittlement: A Review

open access: yesMetals, 2019
It has long been recognized that exposure to irradiation environments could dramatically degrade the mechanical properties of nuclear structural materials, i.e., irradiation-hardening and embrittlement.
Xiazi Xiao
doaj   +3 more sources

The development of prediction model on irradiation embitterment for low Cu RPV steels [PDF]

open access: yesHeliyon, 2023
The development of prediction model on irradiation embitterment (PMIE) of reactor pressure vessel (RPV) is an important method for nuclear reactor long term operation.
Chaoliang Xu   +7 more
doaj   +2 more sources

A study of predicting irradiation-induced transition temperature shift for RPV steels with XGBoost modeling

open access: yesNuclear Engineering and Technology, 2021
The prediction of irradiation-induced transition temperature shift for RPV steels is an important method for long term operation of nuclear power plant.
Chaoliang Xu   +8 more
doaj   +1 more source

Influence analysis of alloy elements on irradiation embrittlement of RPV steel based on deep neural network

open access: yesInternational Journal of Advanced Nuclear Reactor Design and Technology, 2023
Reactor pressure vessel (RPV) is the most important core equipment in PWR. Its service life determines the service life of nuclear power plant and directly affects the economy and safety of nuclear power plant. Because RPV is serviced at high temperature,
Bai Bing   +5 more
doaj   +1 more source

Hydrogen embrittlement in irradiated steels [PDF]

open access: yesNuclear Engineering and Design, 1966
Abstract Hydrogen charging conditions that completely embrittle an ultra-high strength steel have a negligible effect on 212-B pressure vessel steel in tensile and delayed failure tests, Much higher hydrogen charges reduce the notch tensile strength.
A.D. Rossin, T.H. Blewitt, A.R. Troiano
openaire   +3 more sources

Direct Observation of Cu Clusters and Dislocation Loops by Cs-Corrected STEM in Fe-0.6wt%Cu Alloy Irradiated in BR2

open access: yesMetals, 2022
The neutron irradiation of Fe-based fusion and fission reactor materials leads to an increase in ductile-to-brittle transition temperature with a decrease in upper shelf energy. It is well known that Cu content has a strong influence on the embrittlement
Hideo Watanabe   +3 more
doaj   +1 more source

Swelling and He-Embrittlement of Austenitic Stainless Steels and Ni-Alloys in Nuclear Reactors

open access: yesMetals, 2022
Rate theory models have been developed for the swelling and He-embrittlement of austenitic stainless steels and Ni-alloys in nuclear reactors. The models illustrate how microstructure evolution during irradiation affects the rate of change of mechanical ...
Malcolm Griffiths   +2 more
doaj   +1 more source

Control of Irradiation Embrittlement in Molybdenum [PDF]

open access: yesNature, 1961
IRON, steel, and other body-centred cubic metals show an increase in ductile-brittle transition temperature as a result of neutron irradiation. In an attempt to elucidate the mechanism of this embrittlement for EN2 steel, Hull and Mogford1 studied the effect of neutron irradiation on the parameters σi and k y in the Petch relation:
D. N. SETHNA   +3 more
openaire   +1 more source

Investigation on effect of neutron irradiation on welding residual stresses in core shroud of pressurized water reactor

open access: yesNuclear Engineering and Technology, 2023
This paper presents the results of investigating the change in welding residual stresses of the core shroud, which is one of subcomponents in reactor vessel internals, performing finite element analysis.
Jong-Sung Kim, Young-Chan Kim, Wan Yoo
doaj   +1 more source

Multicriteria Analytical Model for Mechanical Integrity Prognostics of Reactor Pressure Vessels Manufactured from Forged and Rolled Steels

open access: yesMathematics, 2022
The aim of this work is to present a new analytical model to evaluate jointly the mechanical integrity and the fitness-for-service of nuclear reactor pressure-vessels steels.
Alvaro Rodríguez-Prieto   +4 more
doaj   +1 more source

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