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2021-08-30Author
Sommer, NiklasKluge, PhilippStredak, FlorianEigler, SaschaHill, HorstNiendorf, ThomasBöhm, StefanSubject
600 Technology Rapid Prototyping <Fertigung>Direct Energy DepositionMechanische EigenschaftFunktioneller GradientenwerkstoffMikrostrukturMetadata
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Aufsatz
Additive Manufacturing of Compositionally-Graded AISI 316L to CoCrMo Structures by Directed Energy Deposition
Abstract
In the present study, compositionally-graded structures of AISI 316L and CoCrMo alloy are manufactured by powder-based laser-beam directed energy deposition (DED-LB). Through a process-integrated adjustment of powder flow, in situ alloying of the two materials becomes feasible. Thus, a sharp and a smooth transition with a mixture of both alloys can be realized. In order to investigate the phase formation during in situ alloying, a simulation approach considering equilibrium calculations is employed. The findings reveal that a precise compositional as well as functional gradation of the two alloys is possible. Thereby, the chemical composition can be directly correlated with the specimen hardness. Moreover, phases, which are identified by equilibrium calculations, can also be observed experimentally using scanning electron microscopy (SEM) and energy-dispersive X-ray-spectroscopy (EDS). Electron backscatter diffraction (EBSD) reveals epitaxial grain growth across the sharp transition region with a pronounced <001>-texture, while the smooth transition acts as nucleus for the growth of new grains with <101>-orientation. In light of envisaged applications in the biomedical sector, the present investigation demonstrates the high potential of an AISI 316L/CoCrMo alloy material combination.
Citation
In: Crystals Volume 11 / Issue 9 (2021-08-30) eissn:2073-4352Sponsorship
Gefördert durch den Publikationsfonds der Universität KasselCitation
@article{doi:10.17170/kobra-202112175279,
author={Sommer, Niklas and Kluge, Philipp and Stredak, Florian and Eigler, Sascha and Hill, Horst and Niendorf, Thomas and Böhm, Stefan},
title={Additive Manufacturing of Compositionally-Graded AISI 316L to CoCrMo Structures by Directed Energy Deposition},
journal={Crystals},
year={2021}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2021$n2021 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/13447 3000 Sommer, Niklas 3010 Kluge, Philipp 3010 Stredak, Florian 3010 Eigler, Sascha 3010 Hill, Horst 3010 Niendorf, Thomas 3010 Böhm, Stefan 4000 Additive Manufacturing of Compositionally-Graded AISI 316L to CoCrMo Structures by Directed Energy Deposition / Sommer, Niklas 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/13447=x R 4204 \$dAufsatz 4170 5550 {{Rapid Prototyping <Fertigung>}} 5550 {{Direct Energy Deposition}} 5550 {{Mechanische Eigenschaft}} 5550 {{Funktioneller Gradientenwerkstoff}} 5550 {{Mikrostruktur}} 7136 ##0##http://hdl.handle.net/123456789/13447
2021-12-20T15:11:26Z 2021-12-20T15:11:26Z 2021-08-30 doi:10.17170/kobra-202112175279 http://hdl.handle.net/123456789/13447 Gefördert durch den Publikationsfonds der Universität Kassel eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ additive manufacturing directed energy deposition compositionally-graded materials functionally-graded materials mechanical properties microstructural evolution computational material science 600 Additive Manufacturing of Compositionally-Graded AISI 316L to CoCrMo Structures by Directed Energy Deposition Aufsatz In the present study, compositionally-graded structures of AISI 316L and CoCrMo alloy are manufactured by powder-based laser-beam directed energy deposition (DED-LB). Through a process-integrated adjustment of powder flow, in situ alloying of the two materials becomes feasible. Thus, a sharp and a smooth transition with a mixture of both alloys can be realized. In order to investigate the phase formation during in situ alloying, a simulation approach considering equilibrium calculations is employed. The findings reveal that a precise compositional as well as functional gradation of the two alloys is possible. Thereby, the chemical composition can be directly correlated with the specimen hardness. Moreover, phases, which are identified by equilibrium calculations, can also be observed experimentally using scanning electron microscopy (SEM) and energy-dispersive X-ray-spectroscopy (EDS). Electron backscatter diffraction (EBSD) reveals epitaxial grain growth across the sharp transition region with a pronounced <001>-texture, while the smooth transition acts as nucleus for the growth of new grains with <101>-orientation. In light of envisaged applications in the biomedical sector, the present investigation demonstrates the high potential of an AISI 316L/CoCrMo alloy material combination. open access Sommer, Niklas Kluge, Philipp Stredak, Florian Eigler, Sascha Hill, Horst Niendorf, Thomas Böhm, Stefan doi:10.3390/cryst11091043 Rapid Prototyping <Fertigung> Direct Energy Deposition Mechanische Eigenschaft Funktioneller Gradientenwerkstoff Mikrostruktur publishedVersion eissn:2073-4352 Issue 9 Crystals Volume 11 false 1043
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