693.932 PEOPLE
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Ertürk, Emre |
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| Petrov, R. H. | Madrid |
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| Azevedo, Nuno Monteiro |
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Sherry, Andrew H.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (63/63 displayed)
- 2022Capturing the Temperature Dependence of Cleavage Fracture Toughness in the Ductile-to-Brittle Transition Regime in Ferritic Steels using an Improved Engineering Local Approach
- 2019Use of local approaches to calculate changes in cleavage fracture toughness due to pre-straining and constraint effectscitations
- 2019Using local approaches to fracture to quantify the local conditions during the ductile-to-brittle transition in ferritic steels
- 2018Ductile Fracture Behaviour of Hot Isostatically Pressed Inconel 690 Superalloycitations
- 2018Effect of Temperature on the Fracture Toughness of Hot Isostatically Pressed 304L Stainless Steelcitations
- 2018Tensile Fracture Behavior of 316L Austenitic Stainless Steel Manufactured by Hot Isostatic Pressingcitations
- 2018Ductile Fracture Assessment of 304L Stainless Steel Using 3D X-ray Computed Tomographycitations
- 2017Predicting the effect of constraint on cleavage and ductile fracture toughness using area contour toughness scalingcitations
- 2017An Assessment of the Ductile Fracture Behaviour of Hot Isostatically Pressed and Forged 304L Stainless Steelcitations
- 2017Size and geometry effects in notched compact tension specimenscitations
- 2017Erratum to
- 2017Investigation of residual stress effects on apparent fracture toughness of high, medium and very low constraint geometries
- 2016Effect of Oxygen Content Upon the Microstructural and Mechanical Properties of Type 316L Austenitic Stainless Steel Manufactured by Hot Isostatic Pressingcitations
- 2016Mechanistic studies on type 300 stainless steels manufactured by Hot Isostatic Pressingcitations
- 2016Mechanistic studies on type 300 stainless steels manufactured by Hot Isostatic Pressing:The impact of oxygen involvement on fracture behaviourcitations
- 2016Microstructural Correlation of Hardness Profile in Martensitic Stainless Steel Weldmentcitations
- 2015Investigation of two-parameter approach to assessment of defects in residual stress fields
- 2015Prediction of retained residual stresses in laboratory fracture mechanics specimens extracted from welded components
- 2015A Microstructural Study on the Observed Differences in Charpy Impact Behavior Between Hot Isostatically Pressed and Forged 304L and 316L Austenitic Stainless Steelcitations
- 2015Rousselier Parameter Calibration for Esshete Weld Metalcitations
- 2015A method to derive the Jc value of A 1T SE(B) using Charpy impact energy in the lower ductile to brittle transition
- 2014Finite Element Simulation of a Circumferential Through-Thickness Crack in a Cylindercitations
- 2014An engineering procedure for calculating cleavage fracture toughness from charpy specimen data using a mechanistic approach for ferritic steels
- 2013Effect of strain paths and residual delta ferrite on the failure of cold rolled austenitic stainless steels, type 304Lcitations
- 2013Advanced assessment of the ductile fracture mechanism in A508 class 3 reactor pressure vessel steel using laboratory X-ray tomographycitations
- 2013Advanced assessment of ductile tearing in nuclear reactor pressure vessel steel using x-ray tomography
- 2013Prediction of SENB fracture toughness from charpy data using the beremin model in the lower transition regioncitations
- 2013Effects of martensite development on lattice strain evolution during the in situ deformation of austenitic stainless steels at cryogenic temperaturescitations
- 2012An engineering assessment methodology for non-sharp defects in steel structures - Part I: Procedure developmentcitations
- 2012Magnitude and distribution of retained residual stresses in laboratory fracture mechanics specimens extracted from welded componentscitations
- 2012SCC of sensitized 304SS in high temperature water with anionic impurities contamination
- 2012Fracture toughness evaluation in C(T) specimens with reduced out-of-plane constraintcitations
- 2012The characterization and interpretation of ductile fracture mechanisms in AL2024-T351 using X-ray and focused ion beam tomographycitations
- 2012Stress corrosion cracking of sensitized type 304 stainless steel in high-temperature water with anionic impurities contaminationcitations
- 2012Advanced assessment of the integrity of ductile components
- 2012Influence of Pd and Ru additions on stress corrosion cracking of austenitic stainless steelscitations
- 2012Assessment of constraint effects on the local behaviour of a propagating crack under cyclic loading
- 2012An engineering assessment methodology for non-sharp defects in steel structures - Part II: Procedure validation and constraint analysiscitations
- 2012Stress corrosion cracking of Ru doped 304 stainless steel in high temperature watercitations
- 2012An investigation of SCC susceptibility of virgin and ruthenium-modified austenitic stainless steels in high-temperature oxygenated water by SSRT testing
- 2011The influence of minor additions of platinum group metals on stress corrosion cracking in austenitic stainless steels
- 2011Investigation into the effect of residual stress on crack-tip constraint and brittle fracturecitations
- 2011Characterisation of the residual stress field and mechanical properties of a narrow-gap girth-welded stainless steel pipe and subsequent application to a numerical modelcitations
- 2010Preliminary evaluation of digital image correlation for in-situ observation of low temperature atmospheric-induced chloride stress corrosion cracking in austenitic stainless steelscitations
- 2010Mechanical properties and fracture of materialscitations
- 2010Assessment of fitness for servicecitations
- 2010Quantification of ductile damage in AL2024-T351 using x-ray tomographycitations
- 20093D modelling of intergranular stress corrosion cracking (IGSCC)
- 2008Introducing heterogeneity into brittle fracture modeling of a 22NiMoCr37 ferritic steel ring forgingcitations
- 2008Grain-scale heterogeneity effect on mechanistic modelling of cleavage fracture of a ferritic rpv steel forging materialcitations
- 2007Measurement and modelling of residual stress effects on crackscitations
- 2007Measurement and modelling of residual stress effects on crackscitations
- 2006Validation of constraint-based methodology in structural integrity of ferritic steels for nuclear reactor pressure vesselscitations
- 2006Residual stress effects on ductile tearingcitations
- 2005Numerical simulation of tearing-fatigue interactions in 316l(N) austenitic stainless steelcitations
- 2005Material constraint parameters for the assessment of shallow defects in structural components. Part II: Constraint-based assessment of shallow defectscitations
- 2005Microstructure engineering for improved intergranular stress corrosion cracking resistance of stainless steels
- 2005Tearing-fatigue interactions in 316L(N) austenitic stainless steelcitations
- 2005Material constraint parameters for the assessment of shallow defects in structural components - Part I: Parameter solutionscitations
- 2004Residual Stress Driven Creep Cracking in Type 316 Stainless Steelcitations
- 2003The assessment of reactor pressure vessel defects allowing for crack tip constraint and its effect on the calculation of the onset of the upper shelfcitations
- 2001Key features arising from structural analysis of the NESC-1 PTS benchmark experimentcitations
- 2001Developments in local approach methodology with application to the analysis/re-analysis of the NESC-1 PTS benchmark experimentcitations
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conferencepaper
Using local approaches to fracture to quantify the local conditions during the ductile-to-brittle transition in ferritic steels
Abstract
Ferritic steels, which are typically used for critical reactor components, including reactor pressure vessels (RPV), exhibit a ductile-to-brittle transition. The fracture process has been linked to the interaction between matrix plasticity and second phase particles. Under high-enough loads, a competition exists between particles rupturing to form micro-cracks and particles decohering to form micro-voids, which are prerequisites for cleavage and ductile fracture, respectively. Currently, there is no sufficiently adequate model that can predict the competition between these two failure mechanisms and hence fracture toughness values in ferritic steels. In this work, failure probability has been estimated using a local approach to cleavage fracture incorporating the statistics of micro-cracks. It is shown that changes in the deformation material properties are not enough to capture the significant changes in fracture toughness. Instead, a correction to the fraction of particles converted to eligible for cleavage micro-cracks is proposed. The method is developed for the RPV steel 22NiMoCr37 and using experimental data for a standard compact tension C(T) specimen. The proposed approach offers more accurate calculations of fracture toughness in the ductile-to-brittle transition regime using only decoupled models, which is attractive for engineering practice.