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| Naji, M. |
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| Petrov, R. H. | Madrid |
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Gourgues-Lorenzon, Anne-Françoise
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (66/66 displayed)
- 2023Microstructure – Toughness relationships in 316L stainless steel produced by laser powder bed fusioncitations
- 2022Experimental determination of 3D crack propagation scenario in resistance spot welds of a martensitic stainless steelcitations
- 2022Dependency of recrystallization kinetics on the solidification microstructure of 316 L stainless steel processed by laser powder bed fusion (LPBF)citations
- 2022Effect of the Thermal History on Macrostructure and Microstructure Development in High-Strength Steel Weldscitations
- 2022Influence of grain size on the high-temperature creep behaviour of M5Framatome1 zirconium alloy under vacuumcitations
- 2022Effect of Various Heat Treatments on the Microstructure of 316L Austenitic Stainless Steel Coatings Obtained by Cold Spraycitations
- 2020Deformation and fracture behavior of new strain-transformable titanium alloys: a multi-scale investigationcitations
- 2019Effects of cooling path and resulting microstructure on the impact toughness of a hot stamping martensitic stainless steelcitations
- 2019Contribution to the understanding of brittle fracture conditions of zirconium alloy fuel cladding tubes during LOCA transientcitations
- 2019Hot Deformation and Recrystallization Mechanisms in a Coarse-Grained, Niobium Stabilized Austenitic Stainless Steel (316Nb)citations
- 2018Anisotropic intergranular damage development and fracture in a 14Cr ferritic ODS steel under high-temperature tension and creepcitations
- 2018Identification of ductile to brittle transition temperature by using plane strain specimen in tensile test and correlation with instrumented Charpy impact test: experimental and numerical studycitations
- 2017Austenite grain growth in a 2.25Cr-1Mo vanadium-free steel accounting for Zener pinning and solute drag : experimental study and modelingcitations
- 2017Microstructure, plastic flow and fracture behavior of ferrite-austenite duplex low density medium Mn steelcitations
- 2017Carbide precipitation in 2.25 Cr-1 Mo bainitic steel : effect of heating and isothermal tempering conditionscitations
- 2016Influence of carbon content on the primary solidification mode of high strength steels in resistance spot welding conditionscitations
- 2016Creep flow and fracture behavior of the oxygen-enriched alpha phase in zirconium alloyscitations
- 2016Mechanical behavior at high temperatures of highly oxygen- or hydrogen-enriched α and (Prior-) β phases of zirconium alloyscitations
- 2016Mechanical behavior at high temperatures of highly oxygen- or hydrogen-enriched α and (Prior-) β phases of zirconium alloyscitations
- 2015Fracture behaviour of a Fe–22Mn–0.6C–0.2V austenitic TWIP steelcitations
- 2015Evolution of microstructure during tempering and its influence on the mechanical behavior of 2.25Cr-1Mo bainitic steel
- 2015Fatigue lifetime and tearing resistance of AA2198 Al-Cu-Li alloy friction stir welds: fffect of defectscitations
- 2015Fatigue lifetime and tearing resistance of AA2198 Al-Cu-Li alloy friction stir welds: fffect of defectscitations
- 2014Quantitative investigation of brittle out-of-plane fracture in X70 pipeline steelcitations
- 2014Microstructural characterization of internal welding defects and their effect on the tensile behavior of FSW joints of AA2198 Al-Cu-Li alloycitations
- 2014Microstructural characterization of internal welding defects and their effect on the tensile behavior of FSW joints of AA2198 Al-Cu-Li alloycitations
- 2014Creep behavior at high temperature of the oxygen stabilized zirconium alpha phase of fuel cladding tubes oxidized in loca conditions
- 2013Creep behavior at high temperature of the oxygen stabilized zirconium alpha phase of fuel cladding tubes oxidized in loca conditions
- 2013Effect of welding defects on plastic behaviour and fatigue lifetime of friction stir welded Al-Cu-Li alloy
- 2013Effect of welding defects on plastic behaviour and fatigue lifetime of friction stir welded Al-Cu-Li alloy
- 2013Local approach applied to the fracture toughness of resistance spot welds
- 2011Modelling and experimental study of the tertiary creep stage of Grade 91 steelcitations
- 2011Damage development in low alloy TRIP-aided steels during air-bendingcitations
- 2011Micromechanical modelling of microtexture formation in low alloy steel bainite
- 2011Microstructural influence on high temperature creep flow of Zr–1%NbO alloy in near-α, (α + β), and β temperature ranges in a high vacuum environmentcitations
- 2011Synthesis of few-layered graphene by ion implantation of carbon in nickel thin filmscitations
- 2011Effect of the metallurgical state of austenite on the microtexture properties of the bainitic transformation in a low alloy steelcitations
- 2010Effect of joint line remnant on fatigue lifetime of friction stir welded Al-Cu-Li alloycitations
- 2010Effect of joint line remnant on fatigue lifetime of friction stir welded Al-Cu-Li alloycitations
- 2010Mechanical and microstructural stability of P92 steel under uniaxial tension at high temperaturecitations
- 2010Long term aging effect on the creep strength of the T92 steel
- 2010Micromechanical modelling of microtexture formation in low alloy steel bainite
- 2010Study of the microstructure of the grade 91 steel after more than 100.000h of creep exposure at 600°Ccitations
- 2010Evolution of dislocation density, size of subgrains and MX-type precipitates in a P91 steel during creep and during thermal ageing at 600 °C for more than 100,000 hcitations
- 2010Modelling of necking during creep of grade 91 steel
- 2010Damage mechanisms of ultrahigh strength steels in bending application to a trip steel
- 2010Influence of strain rate on P92 microstructural stability during fatigue tests at high temperaturecitations
- 2010Effect of the metallurgical state of austenite on the microtexture properties of the bainitic transformation in a low alloy steelcitations
- 2010Damage observation in a high-manganese austenitic TWIP steel by synchrotron radiation computed tomographycitations
- 2010Creep rupture of a 9Cr1MoNbV steel at 500 °C : base metal and welded jointcitations
- 2009Mechanical and microstructural stability of P92 steel under uniaxial tension at high temperature
- 2009Mechanical and microstructural stability of P92 steel under uniaxial tension at high temperature
- 2009Study of the microstructure of the grade 91 steel after more than 100 000h of creep exposure at 600°C
- 2009Effect of shear cutting on ductility of a dual phase steelcitations
- 2009FE modelling of bainitic steels using crystal plasticitycitations
- 2008Microstructure evolution in base metal and welded joint of Grade 91 martensitic steels after creep at 500-600°C
- 2008Modelling high temperature creep flow, damage and fracture behaviour of 9Cr1Mo-NbV steel weldmentscitations
- 2007Ensemble averaging stress-strain fields in polycrystalline aggregates with a constrained surface microstructure-Part 2 : Crystal plasticitycitations
- 2006Numerical generation and study of synthetic bainitic microstructures
- 2006Brittle fracture in heat-affected zones of girth welds of modern line pipe steel (X100)
- 2005Modelling high temperature creep flow, damage, and fracture behaviour of 9Cr1Mo-NbV steel weldments
- 2005Creep failure model of a tempered martensitic stainless steel integrating multiple deformation and damage mechanismscitations
- 2005High temperature creep flow and damage properties of 9CrMoNbV steels : base metal and weldmentcitations
- 2005High temperature creep flow and damage properties of the weakest area of 9Cr1Mo-NbV martensitic steel weldmentscitations
- 2004Creep failure model of a 9Cr1Mo-NvV (P91) steel integrating multiple deformation and damage mechanisms
- 2004Experimental determination of creep properties of zirconium alloys together with phase transformationcitations
Places of action
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conferencepaper
Local approach applied to the fracture toughness of resistance spot welds
Abstract
International audience ; A recently developed methodology for measuring the nugget fracture toughness in mode I was applied to three high-strength steel resistance spot welds, exhibiting either mixed cleavage/ductile or ductile fracture at room temperature. Fracture toughness tests revealed a difference in ductile-to-brittle transition temperature between the welds. Constitutive equations of weld nuggets were determined and implemented in a finite element model of the fracture toughness test, revealing both in-plane bending and in-plane stretching in front of the crack tip. Brittle cleavage fracture of the nuggets is not conveniently described using a simple Ritchie-Knott-Rice approach but the Rice-Tracey model allowed quantitatively relating the high number density of small particles to the nugget fracture toughness in the ductile regime.