Fabricating CoCrFeMnNi high entropy alloy via selective laser melting in-situ alloying

Peng Chen; Sheng Li; Yinghao Zhou; Ming Yan; Moataz M. Attallah

doi:10.1016/j.jmst.2020.01.002

Fabricating CoCrFeMnNi high entropy alloy via selective laser melting in-situ alloying

Peng Chen, Sheng Li, Yinghao Zhou, Ming Yan^*, Moataz M. Attallah

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Quasi-equiatomic CoCrFeMnNi high entropy alloy (HEA) has been in-situ alloyed by selective laser melting (SLM) from a blend of CoCrFeNi pre-alloyed powder and Mn elemental powder. The blended powder shows good printability with various SLM parameters and the as-built HEA samples achieve a reliable forming quality. Despite the slight evaporation of Mn, energy dispersive spectrometer mapping and X-ray diffraction results show that the as-built HEA has a homogeneous chemical distribution and presents a single face-centred-cubic (fcc) phase, indicating successful in-situ alloying. The study has verified the feasibility of using blended powder to prepare high-quality HEA by SLM.

Original language	English
Pages (from-to)	40-43
Number of pages	4
Journal	Journal of Materials Science and Technology
Volume	43
DOIs	https://doi.org/10.1016/j.jmst.2020.01.002
Publication status	Published - 15 Apr 2020

Keywords

CoCrFeMnNi
Crystal structure
High entropy alloys
In-situ alloying
Laser processing
Selective laser melting

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Polymers and Plastics
Metals and Alloys
Materials Chemistry

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10.1016/j.jmst.2020.01.002

Cite this

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title = "Fabricating CoCrFeMnNi high entropy alloy via selective laser melting in-situ alloying",

abstract = "Quasi-equiatomic CoCrFeMnNi high entropy alloy (HEA) has been in-situ alloyed by selective laser melting (SLM) from a blend of CoCrFeNi pre-alloyed powder and Mn elemental powder. The blended powder shows good printability with various SLM parameters and the as-built HEA samples achieve a reliable forming quality. Despite the slight evaporation of Mn, energy dispersive spectrometer mapping and X-ray diffraction results show that the as-built HEA has a homogeneous chemical distribution and presents a single face-centred-cubic (fcc) phase, indicating successful in-situ alloying. The study has verified the feasibility of using blended powder to prepare high-quality HEA by SLM.",

keywords = "CoCrFeMnNi, Crystal structure, High entropy alloys, In-situ alloying, Laser processing, Selective laser melting",

author = "Peng Chen and Sheng Li and Yinghao Zhou and Ming Yan and Attallah, {Moataz M.}",

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doi = "10.1016/j.jmst.2020.01.002",

language = "English",

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journal = "Journal of Materials Science and Technology",

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TY - JOUR

T1 - Fabricating CoCrFeMnNi high entropy alloy via selective laser melting in-situ alloying

AU - Chen, Peng

AU - Li, Sheng

AU - Zhou, Yinghao

AU - Yan, Ming

AU - Attallah, Moataz M.

PY - 2020/4/15

Y1 - 2020/4/15

N2 - Quasi-equiatomic CoCrFeMnNi high entropy alloy (HEA) has been in-situ alloyed by selective laser melting (SLM) from a blend of CoCrFeNi pre-alloyed powder and Mn elemental powder. The blended powder shows good printability with various SLM parameters and the as-built HEA samples achieve a reliable forming quality. Despite the slight evaporation of Mn, energy dispersive spectrometer mapping and X-ray diffraction results show that the as-built HEA has a homogeneous chemical distribution and presents a single face-centred-cubic (fcc) phase, indicating successful in-situ alloying. The study has verified the feasibility of using blended powder to prepare high-quality HEA by SLM.

AB - Quasi-equiatomic CoCrFeMnNi high entropy alloy (HEA) has been in-situ alloyed by selective laser melting (SLM) from a blend of CoCrFeNi pre-alloyed powder and Mn elemental powder. The blended powder shows good printability with various SLM parameters and the as-built HEA samples achieve a reliable forming quality. Despite the slight evaporation of Mn, energy dispersive spectrometer mapping and X-ray diffraction results show that the as-built HEA has a homogeneous chemical distribution and presents a single face-centred-cubic (fcc) phase, indicating successful in-situ alloying. The study has verified the feasibility of using blended powder to prepare high-quality HEA by SLM.

KW - CoCrFeMnNi

KW - Crystal structure

KW - High entropy alloys

KW - In-situ alloying

KW - Laser processing

KW - Selective laser melting

UR - http://www.scopus.com/inward/record.url?scp=85079268100&partnerID=8YFLogxK

U2 - 10.1016/j.jmst.2020.01.002

DO - 10.1016/j.jmst.2020.01.002

M3 - Article

AN - SCOPUS:85079268100

SN - 1005-0302

VL - 43

SP - 40

EP - 43

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

ER -

Fabricating CoCrFeMnNi high entropy alloy via selective laser melting in-situ alloying

Abstract

Keywords

ASJC Scopus subject areas

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