Date
2020-04-30Author
Lauhoff, ChristianSommer, NiklasVollmer, MalteMienert, GabrielKrooß, PhilippBöhm, StefanNiendorf, ThomasSubject
620 Engineering 660 Chemical engineering Memory-LegierungRapid Prototyping <Fertigung>LaserschmelzenPseudoelastizitätMikrostrukturCobaltlegierungNickellegierungGalliumlegierungMetadata
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Aufsatz
Excellent superelasticity in a Co-Ni-Ga high-temperature shape memory alloy processed by directed energy deposition
Abstract
A Co-Ni-Ga high-temperature shape memory alloy has been additively manufactured by directed energy deposition. Due to the highly anisotropic microstructure, i.e. columnar grains featuring a strong near-⟨001⟩ texture in build direction, the as-built material is characterized by a very low degree of constraints and, thus, shows excellent superelasticity without conducting a post-process heat treatment. As characterized by in situ deformation testing and post-mortem microstructural analysis, additive manufacturing employing directed energy deposition seems to be highly promising for processing of shape memory alloys, which often suffer difficult workability.
The present work establishes a new pathway towards realization of high performance shape memory alloys by additive manufacturing and, thus, will stimulate further research in this field directed towards application.
The present work establishes a new pathway towards realization of high performance shape memory alloys by additive manufacturing and, thus, will stimulate further research in this field directed towards application.
Citation
In: Materials Research Letters Volume 8 / Issue 8 (2020-04-30) , S. 314-320 ; eissn:2166-3831Sponsorship
This work was supported by the Deutsche Forschungsgemeinschaft (DFG) [grant number 398899207].Citation
@article{doi:10.17170/kobra-202305097984,
author={Lauhoff, Christian and Sommer, Niklas and Vollmer, Malte and Mienert, Gabriel and Krooß, Philipp and Böhm, Stefan and Niendorf, Thomas},
title={Excellent superelasticity in a Co-Ni-Ga high-temperature shape memory alloy processed by directed energy deposition},
journal={Materials Research Letters},
year={2020}
}
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2023-05-17T13:21:12Z 2023-05-17T13:21:12Z 2020-04-30 doi:10.17170/kobra-202305097984 http://hdl.handle.net/123456789/14713 This work was supported by the Deutsche Forschungsgemeinschaft (DFG) [grant number 398899207]. eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ high-temperature shape memory alloys additive manufacturing laser melting pseudoelasticity direct microstructure design 620 660 Excellent superelasticity in a Co-Ni-Ga high-temperature shape memory alloy processed by directed energy deposition Aufsatz A Co-Ni-Ga high-temperature shape memory alloy has been additively manufactured by directed energy deposition. Due to the highly anisotropic microstructure, i.e. columnar grains featuring a strong near-⟨001⟩ texture in build direction, the as-built material is characterized by a very low degree of constraints and, thus, shows excellent superelasticity without conducting a post-process heat treatment. As characterized by in situ deformation testing and post-mortem microstructural analysis, additive manufacturing employing directed energy deposition seems to be highly promising for processing of shape memory alloys, which often suffer difficult workability. The present work establishes a new pathway towards realization of high performance shape memory alloys by additive manufacturing and, thus, will stimulate further research in this field directed towards application. open access Lauhoff, Christian Sommer, Niklas Vollmer, Malte Mienert, Gabriel Krooß, Philipp Böhm, Stefan Niendorf, Thomas doi:10.1080/21663831.2020.1756495 grant number 398899207 Memory-Legierung Rapid Prototyping <Fertigung> Laserschmelzen Pseudoelastizität Mikrostruktur Cobaltlegierung Nickellegierung Galliumlegierung publishedVersion eissn:2166-3831 Issue 8 Materials Research Letters 314-320 Volume 8 false
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