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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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Swieszkowski, Wojciech
Warsaw University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023In vitro and in vivo degradation behavior of Mg-0.45Zn-0.45Ca (ZX00) screws for orthopedic applicationscitations
- 2023How to control the crystallization of metallic glasses during laser powder bed fusion? Towards part-specific 3D printing of in situ compositescitations
- 2023Microstructure and properties of an AZ61 alloy after extrusion with a forward-backward oscillating die without preheating of the initial billetcitations
- 2023In-depth analysis of the influence of bio-silica filler (Didymosphenia geminata frustules) on the properties of Mg matrix compositescitations
- 2023The combined effect of zinc and calcium on the biodegradation of ultrahigh-purity magnesium implantscitations
- 2023Design of polymeric thin films with nanovolcanoes for trapping hydroxyapatite nanoparticles to promote or inhibit cell proliferation
- 2022In situ alloying of NiTi: Influence of laser powder bed fusion (LBPF) scanning strategy on chemical compositioncitations
- 2022Heat Treatment of NiTi Alloys Fabricated Using Laser Powder Bed Fusion (LPBF) from Elementally Blended Powderscitations
- 2022A comparison of the microstructure-dependent corrosion of dual-structured Mg-Li alloys fabricated by powder consolidation methods: Laser powder bed fusion vs pulse plasma sinteringcitations
- 2022The Role of LPSO Structures in Corrosion Resistance of Mg-Y-Zn Alloyscitations
- 2022How to Control the Crystallization of Metallic Glasses During Laser Powder Bed Fusion? Towards Part-Specific 3d Printing of in Situ Composites
- 2021Investigation into morphological and electromechanical surface properties of reduced-graphene-oxide-loaded composite fibers for bone tissue engineering applications: A comprehensive nanoscale study using atomic force microscopy approachcitations
- 2021Biological and Corrosion Evaluation of In Situ Alloyed NiTi Fabricated through Laser Powder Bed Fusion (LPBF)citations
- 20203D-Printed Drug Delivery Systemscitations
- 20203D-Printed Drug Delivery Systems : The Effects of Drug Incorporation Methods on Their Release and Antibacterial Efficiencycitations
Places of action
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article
In situ alloying of NiTi: Influence of laser powder bed fusion (LBPF) scanning strategy on chemical composition
Abstract
NiTi alloys are widely used in different industrial and medical applications. Due to the inherent difficulty in themachining of these alloys, the use of Additive Manufacturing (AM) methods has become a popular method fortheir production. When working with NiTi alloys, there is a requirement on the precise control of their chemicalcomposition, as this determines the phase transition temperatures which are responsible for their shape memoryor superelastic behaviour. The high energies used in AM to melt the NiTi alloy leads to nickel evaporation,resulting in a chemical change between the batch powder and the additively manufactured part. Therefore, inAM techniques applied to different NiTi alloys, understanding the relationship between the melting strategy andnickel evaporation is crucial during the developing the desired chemical composition of the final-fabricatedmaterial. In this study, three NiTi alloys were fabricated using laser powder bed fusion (LPBF) starting fromelementally blended Ni and Ti powders. Different melting strategies, including single and multiple melting, werestudied in this work. Remelting improved the density and reduced cracking of the AM part. Microscopic observations,using a Scanning Electron Microscope (SEM) with a Backscattered Electron (BSE) detector, showedthat the chemical homogeneity of the materials was enhanced by multiple remelting. Pure Ni and Ti were notfound in any of the samples, proving that the applied melting strategies ensured good alloying of both powders.Regardless of the number of melting runs, X-ray diffraction (XRD) analysis showed the presence of NiTi (B2) and(B19′ ) phases, as well as NiTi2, Ni4Ti3 and Ni3Ti precipitates in all samples. The research demonstrated that,during the AM process, and depending on the melting strategy, 1.6–3.0 wt% of nickel evaporates from thematerial. It was demonstrated that the amount of evaporated nickel increased with the increasing number of meltcycles.