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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Flewitt, Peter E. J.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2024Creep Cavitation Imaging and Analysis in 9%Cr-1%Mo P91 Steels
- 2024A correlative approach to evaluating the links between local microstructural parameters and creep initiated cavitiescitations
- 2024Effect of grain boundary misorientation and carbide precipitation on damage initiationcitations
- 2024Creep cavitation evolution in polycrystalline copper under conditions of stress relaxationcitations
- 2023A novel approach for evaluating creep damage and cavitation in copper bicrystals subject to constant loadcitations
- 2022Stress Corrosion Cracking in Stainless Steelscitations
- 2021The Effects of Fusion Reactor Thermal Transients on the Microstructure of Eurofer-97 Steelcitations
- 2021Comparing Techniques for Quantification of Creep Cavities
- 2021The role of grain boundary ferrite evolution and thermal aging on creep cavitation of type 316H austenitic stainless steelcitations
- 2020Comparison of measured and modelled residual stresses in a welded P91 steel pipe undergoing post weld heat treatmentcitations
- 2020The role of grain boundary orientation and secondary phases in creep cavity nucleation of a 316h boiler headercitations
- 2019The role of replicated service atmosphere on deformation and fracture behaviour of carburised AISI type 316H steelcitations
- 2019Thermal and stress analyses of a novel coated steam dual pipe system for use in advanced ultra-supercritical power plantcitations
- 2019Investigation of a novel design for steam transfer pipes in high temperature power plant
- 2019Reducing steam transport pipe temperatures in power plantscitations
- 2017Creep deformation and stress relaxation of a martensitic P92 steel at 650 °Ccitations
- 2016Influence of nominal composition variation on phase evolution and creep life of Type 316H austenitic stainless steel components:21st European Conference on Fracture, ECF21, 20-24 June 2016, Catania, Italycitations
- 2016On the evaluation of the Bauschinger effect in an austenitic stainless steel - The role of multi-scale residual stressescitations
- 2016On the evaluation of the Bauschinger effect in an austenitic stainless steel—the role of multi-scale residual stressescitations
- 2016Role of long term ageing on the creep life of type 316H austenitic stainless steel bifurcation weldmentscitations
- 2015The role of ferrite in Type 316H austenitic stainless steels on the susceptibility to creep cavitationcitations
- 2014Small-Scale Approaches to Evaluate the Mechanical Properties of Quasi-Brittle Reactor Core Graphitecitations
- 2014In situ neutron diffraction measurement of residual stress relaxation in a welded steel pipe during heat treatmentcitations
- 2014Growth of abnormal planar faceted grains in nanocrystalline nickel containing impurity sulphurcitations
- 2013Residual stress measurements in a ferritic steel/In625 superalloy dissimilar metal weldment using neutron diffraction and deep-hole drillingcitations
- 2013The role of beam dispersion in Raman and photo-stimulated luminescence piezo-spectroscopy of yttria-stabilized zirconia in multi-layered coatingscitations
- 2013Effect of Substrate Curvature on Residual Stresses and Failure Modes of an Air Plasma Sprayed Thermal Barrier Coating Systemcitations
- 2012Calibration of Raman Spectroscopy in the Stress Measurement of Air-Plasma-Sprayed Yttria-Stabilized Zirconiacitations
- 2011An improved method to identify grain boundary creep cavitation in 316H austenitic stainless steel
- 2010A comparison between measured and modeled residual stresses in a circumferentially Butt-welded P91 steel pipecitations
- 2009Spatial variation of residual stresses in a welded pipe for high temperature applicationscitations
- 2005A strategy for accommodating residual stresses in the assessment of repair weldments based upon measurement of near surface stresses
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document
The role of grain boundary orientation and secondary phases in creep cavity nucleation of a 316h boiler header
Abstract
Cavity formation during creep of steels at high temperatures and stresses is closely related to the original and evolved microstructure, particularly the orientation between grains and precipitation at the grain boundaries. Understanding the initiation, growth and coalescence of creep cavities is critical to determining the operational life of components in high temperature, high stress environments such as an advanced gas-cooled nuclear reactor. However, accelerated laboratory-based testing frequently shows another kind of void within the microstructure, caused by plastic damage and ductile failure, particularly if a specimen fails during a test. This paper compares the type of voids and cavities observed in an AISI 316 stainless steel after extensive service in a gas-cooled nuclear reactor boiler header and after uniaxial creep testing of a similar material at higher stresses. The differences between the features observed and their potential mechanistic origins are discussed.