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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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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
Places of action
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article
Characterization of Ti-6Al-4V Bar for Aerospace Fastener Pin Axial Forging
Abstract
Ti-6Al-4V warm forged fasteners are a critical part of the aerospace industry, as they are used in vast quantities for mechanical joining of components for the fuselage, wing-skin and aero-engine. These components are produced in vast quantities at rapid production rates through multi-blow axial forging However the rate that they are manufactured means that manufacturers rely upon periodic part conformance testing to understand if the part is within tolerance or if any undesirable manufacturing defects such as cracks or underfilling are present. Thus, a right-first-time manufacturing approach is essential to minimize non-conformant scrap. An analysis of the Ti-6Al-4V supplied raw material for axial forging, in a variety of different bar diameter sizes and from different industrial suppliers, was conducted. This was to attempt to understand whether material property variation or operator variation was the root cause for some material behaving differently during the manufacture route. Experimental testing was performed through microstructure characterization and mechanical testing methods. The volume fraction of the β-phase was noted to be marginally higher in material with good forgeability. The hardness of the inner core of the bar appears to be a critical material property for the Ti-6Al4V bar, with an overly hard bar-core hindering forgeability of the bar. This is believed to be due to the hotter central region malleability being key for forgeability. Micro-void porosity was also noted which could lead to stress concentration locations, or crack initiation, and as such is a deleterious property for forgeability. The experienced forgeability of the Ti-6Al-4V bars have been demonstrated to be sensitive to rather small variation in measured microstructure and mechanical property. It is believed that cumulative impacts of small differences, 1% variation in α-phase volume fraction, small variations in elongation to failure, 1% variation in elastic modulus and microhardness profile variation at the center of the bar of less than 10 HV0.3, can combine to significantly impact the forgeability of Ti-6Al-4V bar.