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

Autor:	Jeong Min Park, Jungho Choe, Jung Gi Kim, Jae Wung Bae, Jongun Moon, Sangsun Yang, Kyung Tae Kim, Ji-Hun Yu, Hyoung Seop Kim
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	high-entropy alloy additive manufacturing microstructure mechanical property multiple strengthening Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Vol 8, Iss 1, Pp 1-7 (2020)
Druh dokumentu:	article
ISSN:	2166-3831 21663831
DOI:	10.1080/21663831.2019.1638844
Popis:	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.
Databáze:	Directory of Open Access Journals
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