Results 131 to 140 of about 340 (168)
Evaluation of Validity of Master Curve Method to Measure the DBTT Shift of Ferritic Steels for Blanket Structural Componentsopenaire
Recent developments in small punch testing: Tensile properties and DBTT
Theoretical and Applied Fracture Mechanics, 2016 AbstractNeutron irradiation and temper embrittlement in nuclear power plants (NPPs) lead to microstructural changes in structural materials which induce a shift of the ductile to brittle transition temperature (DBTT) towards higher temperatures. Monitoring of the DBTT in NPP components receives therefore considerable attention — in particular in the ...
Stefan Holmström
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DBTT and tensile properties of as-sintered tungsten alloys reinforced by yttrium-zirconium oxide
Journal of Nuclear Materials, 2023Shizhong Wei, Huahai Shen, Liujie Xu
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On the saturation of the DBTT shift of irradiated 12Cr-1MoVW with increasing fluence
Journal of Nuclear Materials, 1986Abstract Irradiation of ferritic steels often results in an increase in the ductile-to-brittle transition temperature (DBTT), sometimes well in excess of 100°C, and also a substantial decrease in the upper shelf energy (USE). Two irradiation experiments were conducted to determine the fluence dependence of this degradation in impact properties ...
J M Vitek, R L Klueh
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Determination of DBTT of functionally graded steels using Artificial Intelligence
2023This study applied three Artificial Intelligence (AI) models to project the ductile to the brittle transition temperature (DBTT) of functionally graded steels (FGS). These prediction models are Minimax Probability Machine Regression (MPMR) model, Genetic Programming (GP), and Emotional Neural Network (ENN) algorithms with strong prediction performance.
Katipoğlu, Okan Mert +4 more
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Modelling of the Charpy Impact Test in the DBTT Range
Materials Science Forum, 2005The finite element method was used in order to compute the energy balance and the stress-strain distribution in the Charpy V-notch specimen. Inertial effects were taken into account by a fully dynamic computation. It was shown that inertial oscillations are damped by viscoplasticity ahead the notch and vanish rapidly. 3D modelling is needed since large
Hausild, Petr +2 more
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Isothermal LCF behavior in aluminide diffusion coated René 80 near the DBTT
Materials & Design, 2009Abstract Ni-base superalloys such as Rene 80 are widely used for aircraft turbine blades manufacture, due to possesses suitable mechanical, oxidation and hot corrosion properties. It is usually coated in order to increase its wear, oxidation, erosion and hot corrosion properties against environmental degradation.
S Nategh
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Investigation of an Updated Continuum Damage Model in the DBTT Region
AIP Conference Proceedings, 2010With the investigation of influence of the stress triaxiality on the fracture properties, an updated continuum damage model is proposed and realized by FEA to evaluate the temperature effect and the strain rate effect on the fracture properties in the ductile and brittle transition temperature (DBTT) region.
Zhao-Xi Wang +8 more
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Effect of Initial Heat Treatment on DBTT of F82H Steel Irradiated by Neutrons
Fusion Science & Technology, 2005The dependence of ductile-brittle transition temperature (DBTT) on tempering time and temperature was examined for a martensitic steel F82H irradiated at 150 and 250°C to a neutron dose of 1.9 dpa ...
E. Wakai +6 more
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A Data-driven machine learning model for radiation-induced DBTT shifts in RAFM steels
Journal of Nuclear MaterialsGebril El-Fallah
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