In-situ synthesis of CoCrFeMnNi high-entropy alloy by selective laser melting

Miao Sun; Bowen Wang; Jianxun Zhang; Bingheng Lu

doi:10.1016/j.intermet.2023.107866

In-situ synthesis of CoCrFeMnNi high-entropy alloy by selective laser melting

Miao Sun
, Bowen Wang
, Jianxun Zhang
, Bingheng Lu

School of Mechanical Engineering

National Innovation Institute of Additive Manufacturing
Xi'an Jiaotong University

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

39 Scopus citations

Abstract

The CoCrFeMnNi high-entropy alloy is considered to be one of the excellent potential material for metal additive manufacturing. In this study, Elemental powders of Co, Cr, Fe, Mn, Ni were blended for bulk samples fabricating to study microstructure, phase composition and mechanical properties. The blended powder shows good printability with various selective laser melting (SLM) parameters and the as-built high-entropy alloy (HEA) samples achieve a reliable forming quality. It has been shown that the as-built HEA presents a single Face Centered Cubic (FCC) matrix and few residual Cr particles, and FCC matrix exhibits a typical hierarchical microstructure. The bulk samples were produced using 320 W laser power, 750 mm/s scan speed and 0.09 mm hatch distance show the best strength and toughness matching. The study has verifified the feasibility of using blended powder to prepare high-quality HEA by SLM.

Original language	English
Article number	107866
Journal	Intermetallics
Volume	156
DOIs	https://doi.org/10.1016/j.intermet.2023.107866
State	Published - May 2023

Keywords

High entropy alloys
In-situ alloying
Microstructure evolution
Selective laser melting

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10.1016/j.intermet.2023.107866

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title = "In-situ synthesis of CoCrFeMnNi high-entropy alloy by selective laser melting",

abstract = "The CoCrFeMnNi high-entropy alloy is considered to be one of the excellent potential material for metal additive manufacturing. In this study, Elemental powders of Co, Cr, Fe, Mn, Ni were blended for bulk samples fabricating to study microstructure, phase composition and mechanical properties. The blended powder shows good printability with various selective laser melting (SLM) parameters and the as-built high-entropy alloy (HEA) samples achieve a reliable forming quality. It has been shown that the as-built HEA presents a single Face Centered Cubic (FCC) matrix and few residual Cr particles, and FCC matrix exhibits a typical hierarchical microstructure. The bulk samples were produced using 320 W laser power, 750 mm/s scan speed and 0.09 mm hatch distance show the best strength and toughness matching. The study has verifified the feasibility of using blended powder to prepare high-quality HEA by SLM.",

keywords = "High entropy alloys, In-situ alloying, Microstructure evolution, Selective laser melting",

author = "Miao Sun and Bowen Wang and Jianxun Zhang and Bingheng Lu",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier Ltd",

year = "2023",

month = may,

doi = "10.1016/j.intermet.2023.107866",

language = "英语",

volume = "156",

journal = "Intermetallics",

issn = "0966-9795",

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TY - JOUR

T1 - In-situ synthesis of CoCrFeMnNi high-entropy alloy by selective laser melting

AU - Sun, Miao

AU - Wang, Bowen

AU - Zhang, Jianxun

AU - Lu, Bingheng

PY - 2023/5

Y1 - 2023/5

N2 - The CoCrFeMnNi high-entropy alloy is considered to be one of the excellent potential material for metal additive manufacturing. In this study, Elemental powders of Co, Cr, Fe, Mn, Ni were blended for bulk samples fabricating to study microstructure, phase composition and mechanical properties. The blended powder shows good printability with various selective laser melting (SLM) parameters and the as-built high-entropy alloy (HEA) samples achieve a reliable forming quality. It has been shown that the as-built HEA presents a single Face Centered Cubic (FCC) matrix and few residual Cr particles, and FCC matrix exhibits a typical hierarchical microstructure. The bulk samples were produced using 320 W laser power, 750 mm/s scan speed and 0.09 mm hatch distance show the best strength and toughness matching. The study has verifified the feasibility of using blended powder to prepare high-quality HEA by SLM.

AB - The CoCrFeMnNi high-entropy alloy is considered to be one of the excellent potential material for metal additive manufacturing. In this study, Elemental powders of Co, Cr, Fe, Mn, Ni were blended for bulk samples fabricating to study microstructure, phase composition and mechanical properties. The blended powder shows good printability with various selective laser melting (SLM) parameters and the as-built high-entropy alloy (HEA) samples achieve a reliable forming quality. It has been shown that the as-built HEA presents a single Face Centered Cubic (FCC) matrix and few residual Cr particles, and FCC matrix exhibits a typical hierarchical microstructure. The bulk samples were produced using 320 W laser power, 750 mm/s scan speed and 0.09 mm hatch distance show the best strength and toughness matching. The study has verifified the feasibility of using blended powder to prepare high-quality HEA by SLM.

KW - High entropy alloys

KW - In-situ alloying

KW - Microstructure evolution

KW - Selective laser melting

UR - https://www.scopus.com/pages/publications/85148334838

U2 - 10.1016/j.intermet.2023.107866

DO - 10.1016/j.intermet.2023.107866

M3 - 文章

AN - SCOPUS:85148334838

SN - 0966-9795

VL - 156

JO - Intermetallics

JF - Intermetallics

M1 - 107866

ER -

In-situ synthesis of CoCrFeMnNi high-entropy alloy by selective laser melting

Abstract

Keywords

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