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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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Hermans, Marcel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024Correlation between microstructural inhomogeneity and architectural design in additively manufactured NiTi shape memory alloyscitations
- 2023Revealing the effects of laser beam shaping on melt pool behaviour in conduction-mode laser meltingcitations
- 2023Healing cracks in additively manufactured NiTi shape memory alloyscitations
- 2023Effect of heat treatment on microstructure and functional properties of additively manufactured NiTi shape memory alloyscitations
- 2023Superelastic response and damping behavior of additively manufactured Nitinol architectured materialscitations
- 2023Laser butt welding of thin stainless steel 316L sheets in asymmetric configurations: A numerical studycitations
- 2023Achieving superelasticity in additively manufactured Ni-lean NiTi by crystallographic designcitations
- 2023Local control of microstructure and mechanical properties of high-strength steel in electric arc-based additive manufacturingcitations
- 2021The Effects of Process Parameters on Melt-pool Oscillatory Behaviour in Gas Tungsten Arc Weldingcitations
- 2021Predictive analytical modelling and experimental validation of processing maps in additive manufacturing of nitinol alloyscitations
- 2021The Effect of Groove Shape on Molten Metal Flow Behaviour in Gas Metal Arc Weldingcitations
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article
Revealing the effects of laser beam shaping on melt pool behaviour in conduction-mode laser melting
Abstract
<p>Laser beam shaping offers remarkable possibilities to control and optimise process stability and tailor material properties and structure in laser-based welding and additive manufacturing. However, little is known about the influence of laser beam shaping on the complex melt-pool behaviour, solidified melt-track bead profile and microstructural grain morphology in laser material processing. A simulation-based approach is utilised in the present work to study the effects of laser beam intensity profile and angle of incidence on the melt-pool behaviour in conduction-mode laser melting of stainless steel 316L plates. The present high-fidelity physics-based computational model accounts for crucial physical phenomena in laser material processing such as complex laser–matter interaction, solidification and melting, heat and fluid flow dynamics, and free-surface oscillations. Experiments were carried out using different laser beam shapes and the validity of the numerical predictions is demonstrated. The results indicate that for identical processing parameters, reshaping the laser beam leads to notable changes in the thermal and fluid flow fields in the melt pool, affecting the melt-track bead profile and solidification microstructure. The columnar-to-equiaxed transition is discussed for different laser-intensity profiles.</p>