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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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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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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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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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Goettgens, Valerie Sue
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Publications (5/5 displayed)
- 2024Microstructure and Mechanical Properties of Ti-6Al-4V In Situ Alloyed with 3 wt% Cr by Laser Powder Bed Fusion
- 2023Microstructural evolution and mechanical properties of Ti-6Al-4V in situ alloyed with 3.5 wt.% Cu by laser powder bed fusioncitations
- 2023Microstructure of a modulated Ti-6Al-4V – Cu alloy fabricated via in situ alloying in laser powder bed fusioncitations
- 2022Feasibility Study Of Fabricating A Partly Amorphous Copper-Rich Titanium Alloy Via In-Situ Alloying In Laser Powder Bed Fusion
- 2021Laser powder bed fusion of nano-CaB6 decorated 2024 aluminum alloycitations
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article
Microstructure of a modulated Ti-6Al-4V – Cu alloy fabricated via in situ alloying in laser powder bed fusion
Abstract
<p>In this work, Ti-6Al-4V was in situ alloyed with 15 wt% Cu using laser powder bed fusion (LPBF) to investigate the influence of the eutectoid alloying element Cu on microstructural features. The chemical inhomogeneities owing to in situ alloying are used to allow simultaneous solidification of differently composed material. After LPBF, the matrix material consists of metastable, equiaxed β-Ti and Ti<sub>2</sub>Cu precipitates. Cu stabilizes β-Ti, and the unique solidification conditions with high thermal supercooling cause the equiaxed grain morphology and the formation of Ti<sub>2</sub>Cu precipitates. Inclusions, assigned incompletely melted Ti-6Al-4V powder particles, consist of α’/α-Ti. In the transition zone between β-Ti and α’/α-Ti, orthorhombic α’’ is found as nano-sized crystals. For the first time, β-stabilization across a wide area through Cu with a composition of Ti<sub>76.2</sub>Al<sub>5.7</sub>V<sub>3.2</sub>Cu<sub>14.9</sub> and the formation of α’’ with the composition of Ti<sub>80.2</sub>Al<sub>5.4</sub>V<sub>3.3</sub>Cu<sub>11.1</sub> is shown. It is demonstrated that Cu is a very versatile alloying element in Ti-6Al-4V, significantly impacting microstructural development. Hence LPBF in situ alloying allows more than one alloy composition to be investigated for microstructural features in a single experiment, which could be an interesting approach to alloy development.</p>