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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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Michalski, Bartosz
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 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
- 2021Effect of severe deformation on the microstructure and properties of Nd-Fe-B powders caused by hydrostatic extrusioncitations
- 2019Monitoring of the hydrogen decrepitation process by acoustic emissioncitations
- 2019Effect of silver content in Zr<inf>55</inf>Cu<inf>30</inf>Ni<inf>5</inf>Al<inf>10−x</inf>Ag<inf>X</inf> alloys on the supercooled liquid stability analysed by TTT diagrams
- 2017Complex Characteristics of Sintered Nd–Fe–B Magnets in Terms of Hydrogen Based Recyclingcitations
- 2016Hydrogen disproportionation phase diagram and magnetic properties for Nd<inf>15</inf>Fe<inf>79</inf>B<inf>6</inf> alloycitations
- 2013Effect of microstructure changes on magnetic properties of spark plasma sintered Nd-Fe-B powderscitations
- 2012Processing the Nd-Fe-B powders by high temperature millingcitations
- 2012Magnetic properties of Nd 12Fe 82B 6 and Nd 14Fe 80B 6 powders obtained by high temperature milling
- 2011Characterization of nanostructured Nd-Fe-Al permanent magnetscitations
- 2011Correlation between the size of Nd<inf>60</inf>Fe<inf>30</inf>Al <inf>10</inf> sample, cast by various techniques and its coercivity
- 2008Effect of processing parameters on the structure and magnetic properties of Nd60Fe30Al10 alloycitations
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article
Heat Treatment of NiTi Alloys Fabricated Using Laser Powder Bed Fusion (LPBF) from Elementally Blended Powders
Abstract
<jats:p>The use of elemental metallic powders and in situ alloying in additive manufacturing (AM) is of industrial relevance as it offers the required flexibility to tailor the batch powder composition. This solution has been applied to the AM manufacturing of nickel-titanium (NiTi) shape memory alloy components. In this work, we show that laser powder bed fusion (LPBF) can be used to create a Ni55.7Ti44.3 alloyed component, but that the chemical composition of the build has a large heterogeneity. To solve this problem three different annealing heat treatments were designed, and the resulting porosity, microstructural homogeneity, and phase formation was investigated. The heat treatments were found to improve the alloy’s chemical and phase homogeneity, but the brittle NiTi2 phase was found to be stabilized by the 0.54 wt.% of oxygen present in all fabricated samples. As a consequence, a Ni2Ti4O phase was formed and was confirmed by transmission electron microscopy (TEM) observation. This study showed that pore formation in in situ alloyed NiTi can be controlled via heat treatment. Moreover, we have shown that the two-step heat treatment is a promising method to homogenise the chemical and phase composition of in situ alloyed NiTi powder fabricated by LPBF.</jats:p>