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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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Pfeifer, Tanja
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2022Optimization of the post-process heat treatment strategy for a Near-α Titanium base alloy produced by laser powder bed fusioncitations
- 2022On the existence of orthorhombic martensite in a near-α titanium base alloy used for additive manufacturingcitations
- 2022Formation and evolution of precipitates in an additively manufactured near-α titanium base alloycitations
- 2021Mechanical Properties of Selective Laser-Melted Components of AlSi10Mg for Prototype Vehiclescitations
- 2020Selective Laser Melting of a Near-alpha Ti6242S Alloy for High-Performance Automotive Partscitations
- 2018Investigation on the Liquid Flow ahead of the Solidification Front During the Formation of Peritectic Layered Solidification Structure
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article
Formation and evolution of precipitates in an additively manufactured near-α titanium base alloy
Abstract
<p>Titanium base alloys are frequently used in laser powder bed fusion manufacturing processes and enable the production of lightweight and complex components. This study describes the influence of the heat input and various post-process heat treatments on the martensite formation and its decomposition in an additively manufactured Ti-6Al-2Sn-4Zr-2Mo-Si alloy. The change of the martensite crystal structure from orthorhombic to hexagonal, caused by additional heat input, was proven by high-energy X-ray diffraction. It is shown that the heat input of the laser affects the diffusion of alloying elements such as Mo and Si. This behavior was investigated by atom probe tomography, which confirms clustering of Mo and Si at dislocations and grain boundaries, and allows for linking the heat input during the manufacturing process with the morphology of the observed clusters. Moreover, particular emphasis is laid on explaining the formation mechanism of (Ti,Zr)<sub>6</sub>Si<sub>3</sub> silicide particles during a subsequent heat treatment.</p>