Datum
2024-06-19Autor
Lauhoff, ChristianNobach, MikkelMedvedev, AlexArold, TizianTorrent, Christof Johannes JaimeElambasseril, JoeKrooß, PhilippStenzel, MelanieWeinmann, MarkusXu, WeiMolotnikov, AndreyNiendorf, ThomasSchlagwort
600 Technik 660 Chemische Verfahrenstechnik, Technische Chemie Rapid Prototyping <Fertigung>Memory-LegierungMikrostrukturSelektives ElektronenstrahlschmelzenHochtemperaturHochschmelzendes MetallMartensitumwandlungMetadata
Zur Langanzeige
Aufsatz
This work was supported by Alexander von Humboldt-Stiftung.
Electron beam powder bed fusion of Ti-30Ta high-temperature shape memory alloy: microstructure and phase transformation behaviour
Zusammenfassung
The present study reports on additive manufacturing of a Ti-30Ta (at.%) high-temperature shape memory alloy (HT-SMA) using electron beam powder bed fusion (PBF-EB/M) technique. Detailed microstructure analysis was conducted to reveal the microstructural evolution along the entire process chain, i.e. from gas-atomised powder to post-processed material. PBF-EB/M processed structures with near full density and an isotropic, β-phase stabilised microstructure, i.e. equiaxed β-grains of around 20 μm in diameter with no preferred crystallographic orientation, are reported. As revealed by differential scanning calorimetry, post-process heat-treated Ti-Ta demonstrates a reversible martensitic phase transformation well above 100°C. Although partly unmolten Ta-particles after both gas atomisation and PBF-EB/M remain a challenge towards robust processing, PBF-EB/M appears to show significant potential for fabrication of Ti-Ta HTSMAs, especially when functional metal parts and components with complex shapes are required, which are difficult to fabricate conventionally.
Zitierform
In: Virtual and Physical Prototyping Volume 19 / Issue 1 (2024-06-19) eissn:1745-2767Förderhinweis
Gefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem VerlagThis work was supported by Alexander von Humboldt-Stiftung.
Zitieren
@article{doi:10.17170/kobra-2024070810478,
author={Lauhoff, Christian and Nobach, Mikkel and Medvedev, Alex and Arold, Tizian and Torrent, Christof Johannes Jaime and Elambasseril, Joe and Krooß, Philipp and Stenzel, Melanie and Weinmann, Markus and Xu, Wei and Molotnikov, Andrey and Niendorf, Thomas},
title={Electron beam powder bed fusion of Ti-30Ta high-temperature shape memory alloy: microstructure and phase transformation behaviour},
journal={Virtual and Physical Prototyping},
year={2024}
}
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2024-07-09T12:48:32Z 2024-07-09T12:48:32Z 2024-06-19 doi:10.17170/kobra-2024070810478 http://hdl.handle.net/123456789/15904 Gefördert im Rahmen eines Open-Access-Transformationsvertrags mit dem Verlag This work was supported by Alexander von Humboldt-Stiftung. eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ additive manufacturing prealloyed powder EIGA refractory metals martensitic phase transformation 600 660 Electron beam powder bed fusion of Ti-30Ta high-temperature shape memory alloy: microstructure and phase transformation behaviour Aufsatz The present study reports on additive manufacturing of a Ti-30Ta (at.%) high-temperature shape memory alloy (HT-SMA) using electron beam powder bed fusion (PBF-EB/M) technique. Detailed microstructure analysis was conducted to reveal the microstructural evolution along the entire process chain, i.e. from gas-atomised powder to post-processed material. PBF-EB/M processed structures with near full density and an isotropic, β-phase stabilised microstructure, i.e. equiaxed β-grains of around 20 μm in diameter with no preferred crystallographic orientation, are reported. As revealed by differential scanning calorimetry, post-process heat-treated Ti-Ta demonstrates a reversible martensitic phase transformation well above 100°C. Although partly unmolten Ta-particles after both gas atomisation and PBF-EB/M remain a challenge towards robust processing, PBF-EB/M appears to show significant potential for fabrication of Ti-Ta HTSMAs, especially when functional metal parts and components with complex shapes are required, which are difficult to fabricate conventionally. open access Lauhoff, Christian Nobach, Mikkel Medvedev, Alex Arold, Tizian Torrent, Christof Johannes Jaime Elambasseril, Joe Krooß, Philipp Stenzel, Melanie Weinmann, Markus Xu, Wei Molotnikov, Andrey Niendorf, Thomas doi:10.1080/17452759.2024.2358107 Rapid Prototyping <Fertigung> Memory-Legierung Mikrostruktur Selektives Elektronenstrahlschmelzen Hochtemperatur Hochschmelzendes Metall Martensitumwandlung publishedVersion eissn:1745-2767 Issue 1 Virtual and Physical Prototyping Volume 19 false
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