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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| 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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| 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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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Warnken, Nils
University of Birmingham
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (40/40 displayed)
- 2024On the Salt Bath Cleaning Operations for Removal of Lubricants on the Surface of Titanium Alloy Aerospace Fasteners
- 2024Elucidating the Mechanism of Iron‐Catalyzed Graphitizationcitations
- 2024Characterization of Ti-6Al-4V Bar for Aerospace Fastener Pin Axial Forging
- 2024Elucidating the Mechanism of Iron-Catalyzed Graphitization: The First Observation of Homogeneous Solid-State Catalysiscitations
- 2023Temperature Range of Heating Rate Dependent Reactions Leading to Spinel Formation on a Ni-based Superalloycitations
- 2021Thermodynamic study of single crystal, Ni-based superalloys in the γ+γ’ two-phase region using Knudsen effusion mass spectrometry, DSC and SEMcitations
- 2021A study of the deformation derivatives for a Ti-6Al-4V inertia friction weldcitations
- 20193D Forging simulation of a multi-partitioned titanium alloy billet for a medical implantcitations
- 2018A large-scale 3d computer tomography analysis of primary dendrite arm spacing response to withdrawal velocity change using dendrite centre tracking
- 2018Study into the Role of Nickel Vapor on Surface Modification of a Third-Generation Single-Crystal Superalloycitations
- 2017Study of as-cast structure formation in Titanium alloy
- 2017Computational Study of Spacing Selection in Directionally Growing Dendritic Arrays
- 2017Columnar and Equiaxed Solidification of Al-7 wt.% Si Alloys in Reduced Gravity in the Framework of the CETSOL Projectcitations
- 2017Skeletonisation to Find the Centre of Dendrites Traced from a 2D Microstructural Image
- 2016Studies on the solidification path of single crystal superalloyscitations
- 2014Modelling of the influence of alloy composition on flow stress in high-strength nickel-based superalloyscitations
- 2013The effect of hydrogen on porosity formation during electron beam welding of titanium alloys
- 2013Numerical and experimental study of post-heat treatment gas quenching and its impact on microstructure and creep in CMSX-10 superalloycitations
- 2012The effect of hydrogen on porosity formation during electron beam welding of titanium alloys
- 2012On the mechanism of porosity formation during welding of titanium alloyscitations
- 2012Hydrogen Transport and Rationalization of Porosity Formation during Welding of Titanium Alloyscitations
- 2012Microsegregation and secondary phase formation during directional solidification of the single-crystal Ni-based superalloy LEK94citations
- 2012Modeling of the influence of oxidation on thin-walled specimens of single crystal superalloyscitations
- 2012A model for the creep deformation behaviour of nickel-based single crystal superalloyscitations
- 2012Prediction of plastic strain for recrystallisation during investment casting of single crystal superalloyscitations
- 2012Coupled thermodynamic/kinetic model for hydrogen transport during electron beam welding of titanium alloycitations
- 2012On the modelling of the point defects in the ordered B2 phase of the Ti-Al systemcitations
- 2011Application of computational thermodynamics for superalloyscitations
- 2011Numerical modelling of stress and strain evolution during solidification of a single crystal superalloycitations
- 2010Atom probe tomography analysis of the distribution of rhenium in nickel alloyscitations
- 2010Microstructure evolution of rheo-cast A356 aluminium alloy in consideration of different cooling conditions by means of the cooling channel processcitations
- 2009Quantitative simulations of microstructure evolution in single crystal superalloys during solution heat treatmentcitations
- 2009Coupled modelling of solidification and solution heat treatment of advanced single crystal nickel base superalloycitations
- 2009Alloys-By-Design: Application to nickel-based single crystal superalloyscitations
- 2009Phase-field modelling of as-cast microstructure evolution in nickel-based superalloyscitations
- 2007Time-dependent directional solidification of binary Al-Cu alloys in the initial transientcitations
- 2007Microstructure Modeling During Solidification of Castings (TP A2)
- 2007CALPHAD and phase-field modeling: A successful liaisoncitations
- 2007Simulation of Phase Changes During Thermal Treatments of Various Metal Alloys (TP B2)
- 2005Investigation of the initial transient in directional solidification of binary AlCu alloyscitations
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article
A model for the creep deformation behaviour of nickel-based single crystal superalloys
Abstract
A physical model for the creep deformation of single crystal superalloys is presented that is sensitive to chemical composition and microstructure. The rate-controlling step is assumed to be climb of dislocations at the matrix/particle interfaces and their rate of escape from trapped configurations; a strong dependence on alloy composition then arises. By testing the predictions of the model against the considerable body of published experimental data, the dependence of the kinetics of creep deformation on alloy chemistry is rationalized. The effects of microstructural scale - precipitate size, geometry and spacing - are also studied. The climb processes assumed at the matrix/precipitate interfaces give rise to the vacancy flux required for the mass transport needed for rafting. For creep deformation at higher temperatures, a modification to the basic theory is proposed to account for a rafting-induced strengthening effect. A first-order estimate for the rate of creep deformation emerges from the model, which is useful for the purposes of alloy design.