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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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Emmelmann, Claus
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2024Influence of Different Powder Conditioning Strategies on Metal Binder Jetting with Ti-6Al-4Vcitations
- 2024Comparative analysis of laser power, pure titanium, and titanium alloy effects on dendrite growth and surface morphology of TiO2-ceramic
- 2023Removability of support structures in laser powder bed fusion of Ti-6Al-4V ; Entfernbarkeit von Stützstrukturen im pulverbettbasierten Laserstrahlschmelzen von Ti-6Al-4V
- 2023Predictive modeling of lattice structure design for 316L stainless steel using machine learning in the L-PBF process
- 2022Piston-Based Material Extrusion of Ti-6Al-4V Feedstock for Complementary Use in Metal Injection Moldingcitations
- 2022Disentangled UHMWPE@silica powders for potential use in power bed fusion based additive manufacturingcitations
- 2022Design Guidelines For Green Parts Manufactured With Stainless Steel In The Filament Based Material Extrusion Process For Metals (MEX/M)
- 2021Material modeling of Ti–6Al–4V alloy processed by laser powder bed fusion for application in macro-scale process simulation
- 2020Influence of laser beam profile on the selective laser melting process of AlSi10Mgcitations
- 2018Quality target-based control of geometrical accuracy and residual stresses in laser metal depositioncitations
- 2018Laser metal deposition of bionic aluminum supports: reduction of the energy input for additive manufacturing of a fuselage
- 2018From powder to solid: The material evolution of Ti-6Al-4V during laser metal depositioncitations
- 2018Laser metal deposition of titanium parts with increased productivity
- 2017Characterization of the anisotropic properties for laser metal deposited Ti-6Al-4 V
- 2017Analysis of design guidelines for automated order acceptance in additive manufacturingcitations
- 2017Process monitoring of laser remote cutting of carbon fiber reinforced plastics by means of reflecting laser radiationcitations
- 2017Laser metal deposition of Ti-6Al-4V structures: Analysis of the build height dependent microstructure and mechanical propertiescitations
- 2016Laser cutting of carbon fibre reinforced plastics of high thicknesscitations
- 2016Analysis of residual stress formation in additive manufacturing of Ti-6Al-4V
- 2016Evolutionary-based design and control of geometry aims for AMD-manufacturing of Ti-6Al-4V parts
- 2016Evolutionary-based design and control of geometry aims for AMD-manufacturing of Ti-6Al-4V parts ...
- 2016Additive manufacturing of metalscitations
- 2015Investigations on the process strategy of laser remote cutting of carbon fiber reinforced plastics with a thickness of more than 5 MM
- 2015Fatigue Performance of Laser Additive Manufactured Ti–6al–4V in Very High Cycle Fatigue Regime up to 1E9 Cycles
- 2015Fatigue Performance of Laser Additive Manufactured Ti–6al–4V in Very High Cycle Fatigue Regime up to 1E9 Cycles
- 2014Low coherence interferometry in selective laser melting
- 2013Experimental and analytical investigation of cemented tungsten carbide ultra-short pulse laser ablation
- 2011Process and mechanical properties: Applicability of a scandium modified Al-alloy for laser additive manufacturing
- 2011Development of plasma-laser-hybrid welding process
- 2011Analysis of laser ablation of CFRP by ultra-short laser pulses with short wavelength
Places of action
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document
From powder to solid: The material evolution of Ti-6Al-4V during laser metal deposition
Abstract
S.135-147 ; The additive manufacturing of titanium parts by laser metal deposition (LMD) offers a promising alternative to conventional machining of aviation parts. The technology enables the production of near net shape parts with higher deposition rates than powder bed-based processes. Ti-6Al-4V powder is fed directly into a high-power laser beam in order to form a deposition track on the underlying material. For three dimensional parts several tracks are stacked on top of each other. In this paper the material evolution from powder to a solid wall during LMD is investigated. Powder properties as well as the microstructure in deposited structures are thoroughly described and analyzed. The gained knowledge provides a deeper process comprehension and is an important step towards high-quality additive manufacturing of Ti-6Al-4V. At first, the influence of powder particle size on the LMD process is quantified by creating two powder fractions with different sieving procedures. The used material is recycled Ti-6Al-4V powder from a powder bed-based AM process with particle sizes up to 150 µm. The powder is characterized according to current standards; apparent density, tap density and the flowability are determined as well as the particle size distribution. Additionally, the particle morphology is analyzed using electron beam microscopy. In order to link the powder properties to the LMD process and to identify impact factors to the feeding behavior the mass flow of both powder fractions is measured. Secondly, walls are manufactured with the characterized powder and the resulting microstructure is analyzed. Because of the layer-wise deposition and the resultant periodic heat input each layer experiences several thermal cycles. As a result various solid phase transformations occur during the deposition of consecutive tracks. In addition the thermal boundary conditions change with increasing wall height and a heterogeneous microstructure is observed. It consists of non-equilibrium phases (martensitic or massive a) and ...