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Superior tensile properties of 1C-CoCrFeMnNi high-entropy alloy additively manufactured by selective laser melting

MPG-Autoren
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Kim,  Jung Gi
Alloys for Additive Manufacturing, Project Groups, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
Department of Materials Science and Engineering, Center for High-Entropy Alloys, POSTECH, Pohang, 37673, South Korea;

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Zitation

Park, J.-M., Choe, J., Kim, J. G., Bae, J. W., Moon, J., Yang, S., et al. (2020). Superior tensile properties of 1C-CoCrFeMnNi high-entropy alloy additively manufactured by selective laser melting. Materials Research Letters, 8(1), 1-7. doi:10.1080/21663831.2019.1638844.


Zitierlink: https://hdl.handle.net/21.11116/0000-0009-6780-2
Zusammenfassung
CoCrFeMnNi high-entropy alloys containing 1 at carbon (C-HEAs) were additively manufactured using selective laser melting (SLM). Superior tensile properties of the as-built C-HEA (to previously reported ones) were achieved by utilizing multiple strengthening mechanisms (i.e. solid solution, grain refinement, dislocation density, and nano-precipitation) by this new manufacturing method. In particular, the SLM process could allow to maximize the strengthening effect of carbon addition to HEAs via finely distributed nano-carbides at the boundaries of solidification cellular structure.  This work will open a new window to utilize the SLM process for enhanced mechanical properties of HEAs with great potential. © 2019, © 2019 The Author(s). Published by Informa UK Limited, trading as Taylor Francis Group.