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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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Pickering, Ej
University of Manchester
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (37/37 displayed)
- 2024Eutectic Superalloys for Laser Powder Bed Fusion
- 2024In-Situ EBSD Study of Austenitisation in a Wire-Arc Additively Manufactured High-Strength Steelcitations
- 2024Development of novel carbon-free cobalt-free iron-based hardfacing alloys with a hard π-ferrosilicide phase
- 2023β grain refinement during solidification of Ti-6Al-4V in Wire-Arc Additive Manufacturing (WAAM)citations
- 2023Using Concentration Gradients to Examine the Effects of Al, Ga and Sn Additions on the Low-Activation VCrMnFe Systemcitations
- 2022β Grain refinement by yttrium addition in Ti-6Al-4V Wire-Arc Additive Manufacturingcitations
- 2022Fundamental Aspects of Functional Grading via Powder Hot Isostatic Pressing - Development of microstructure and diffusional processescitations
- 2021Addition of Ge to Cr–Ta–Si laves phase-based alloys
- 2021Development of a novel Ni-based multi-principal element alloy filler metal, using an alternative melting point depressantcitations
- 2021An assessment of the thermal stability of refractory high entropy superalloys
- 2021The Potential for Grain Refinement of Wire-Arc Additive Manufactured (WAAM) Ti-6Al-4V by ZrN and TiN Inoculationcitations
- 2021Microstructure transition gradients in titanium dissimilar alloy (Ti-5Al-5V-5Mo-3Cr/Ti-6Al-4V) tailored wire-arc additively manufactured componentscitations
- 2021An investigation of the miscibility gap controlling phase formation in refractory metal high entropy superalloys via the Ti-Nb-Zr constituent system
- 2020Novel reduced-activation TiVCrFe based high entropy alloyscitations
- 2020The effect of Al on the formation and stability of a bcc - B2 microstructure in a refractory metal high entropy superalloy system
- 2020Elucidating the microstructural development of refractory metal high entropy superalloys via the Ti–Ta–Zr constituent system
- 2020Developing alloy compositions for future high temperature disk rotorscitations
- 2020Observation of a refractory metal matrix containing Zr-Ti- rich precipitates in a Mo0.5NbTa0.5TiZr high entropy alloycitations
- 2020Observation of a refractory metal matrix containing Zr-Ti-rich precipitates in a Mo 0.5 NbTa 0.5 TiZr high entropy alloy
- 2019On the design and feasibility of tantalum-base superalloyscitations
- 2019Measurement and Prediction of Phase Transformation Kinetics in a Nuclear Steel During Rapid Thermal Cyclescitations
- 2018On the effect of Nb on the microstructure and properties of next generation polycrystalline powder metallurgy Ni-based superalloyscitations
- 2018On the influence of Mn on the phase stability of the CrMn x FeCoNi high entropy alloys
- 2018The effect of zirconium on the omega phase in Ti-24Nb-[0–8]Zr (at.%) alloys
- 2018Observation of a new B2 structured phase in Ti-15Mo (wt%)citations
- 2017An assessment of the lattice strain in the CrMnFeCoNi high-entropy alloy
- 2017The effect of heat treatment on precipitation in the Cu-Ni-Al alloy Hiduron® 130citations
- 2017Synchrotron and neural network analysis of the influence of composition and heat treatment on the rolling contact fatigue of hypereutectoid pearlitic steelscitations
- 2017Degradation of metallic materials studied by correlative tomographycitations
- 2017Gamma-gamma prime-gamma double prime dual-superlattice superalloyscitations
- 2016Precipitation in the equiatomic high-entropy alloy CrMnFeCoNi
- 2016The microstructure and hardness of Ni-Co-Al-Ti-Cr quinary alloyscitations
- 2016Soft novel form of white-etching matter and ductile failure of carbide-free bainitic steels under rolling contact stressescitations
- 2016High-entropy alloys: a critical assessment of their founding principles and future prospectscitations
- 2015A Comprehensive Case Study of Macrosegregation in a Steel Ingot
- 2015Fine-scale precipitation in the high-entropy alloy Al 0.5 CrFeCoNiCu
- 2014Degradation of nanostructured bainitic steel under rolling contact fatigue
Places of action
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document
β grain refinement during solidification of Ti-6Al-4V in Wire-Arc Additive Manufacturing (WAAM)
Abstract
Constructing titanium aerospace parts by near-net-shape processing has the potential to greatly reduce cost and lead time, one method for this is Wire-Arc Additive Manufacturing (WAAM). Conventional WAAM processing with the most common Ti alloy, Ti-6Al-4V, results in solidification by epitaxial growth from previously deposited layers and a structure dominated by columnar β grains which are heavilyfibre textured and cm's in scale. In order to prevent these large grains from forming, while maintaining deposition parameters, the solidification conditions were modified by the additions of particles to the melt; either using inoculant, TiN particles, or the solutal growth restrictor, Y, also added as elemental powder that dissolved in the melt. The powder particles were added by adhering them to the deposited tracks to avoid the costs of manufacturing new wires. With TiN inoculants the morphology of β grains was completely modified to equiaxed grains averaging 300 μm in diameter. Y additions narrowed the columnar grains from 1-2mm to 100-300 μm. Y also induced a change to equiaxed grains, late in solidification, in the region which was remelted by subsequent deposition. However, Yttria particles were found to have formed interdendritically with an interconnected skeletal morphology. High-resolution EBSD analysis showed both TiN and yttria particles exhibit specific orientation relationships with the solidified β grains, which were confirmed experimentally.