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

By Jeong-Min Park, Jungho Choe, Jung Gi Kim, Jae Wung Bae, J. Moon, Sangsun Yang, K. Kim, Ji-Hun Yu, Hyoung-Seop Kim. Materials Research Letters, 2020

196 citations recorded by the source corpus.

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. GRAPHICAL ABSTRACT IMPACT STATEMENT CoCrFeMnNi high-entropy alloys containing 1 at% carbon were successfully produced by selective laser melting, and the alloys exhibited much better tensile performance than additive manufactured high-entropy alloy previously reported.

Subfields: Aerospace Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/d0f4ef1fcfc62cdbfbd6ac5bdf6891aa25107f48

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In Aerospace Engineering

  1. Zhiming Li
  2. U. Ramamurty

In Mechanical Engineering

  1. Jun Wei
  2. Zhiming Li
  3. U. Ramamurty

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