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

Park, Jeong-Min; Choe, Jungho; Kim, Jung Gi; Bae, Jae Wung; Moon, Jongun; Yang, Sangsun; Kim, Kyung Tae; Yu, Ji-Hun; Kim, Hyoung Seop

doi:10.1080/21663831.2019.1638844

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

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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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Superior tensile properties of 1%C-CoCrFeMnNi high-entropy alloy additively manufactured by selective laser melting.pdf
(出版社版), 993KB

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引用

Park, J.-M., Choe, J., Kim, J. G., Bae, J. W., Moon, J., Yang, S., Kim, K. T., Yu, J.-H., & Kim, H. S. (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.

引用: https://hdl.handle.net/21.11116/0000-0009-6780-2

要旨

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.