Additively manufactured CrMnFeCoNi/AlCoCrFeNiTi0.5 laminated high-entropy alloy with enhanced strength-plasticity synergy

S. Guan; D. Wan; K. Solberg; F. Berto; T. Welo; T. M. Yue; K. C. Chan

doi:10.1016/j.scriptamat.2020.03.032

Additively manufactured CrMnFeCoNi/AlCoCrFeNiTi_0.5 laminated high-entropy alloy with enhanced strength-plasticity synergy

S. Guan, D. Wan, K. Solberg, F. Berto, T. Welo, T. M. Yue, K. C. Chan

Research output: Journal article publication › Journal article › Academic research › peer-review

49 Citations (Scopus)

Abstract

In this study, we additively manufactured a CrMnFeCoNi/AlCoCrFeNiTi_0.5 laminated high-entropy alloy (HEA), with alternating layers of both constituent materials, that exhibits enhanced strength-plasticity synergy during compression (yield strength up to 990 MPa and no complete fracture until 80% strain), surpassing those of monolithic bulk HEAs. The enhanced strength-plasticity synergy originates from heterogenous microstructures of ultra-hard body-centered-cubic equiaxed grains and soft face-centered-cubic columnar grains periodically arranged in the AlCoCrFeNiTi_0.5 and CrMnFeCoNi lamellae, respectively. This study demonstrates a feasible and flexible way to design HEAs with heterogenous microstructures and superior mechanical properties.

Original language	English
Pages (from-to)	133-138
Number of pages	6
Journal	Scripta Materialia
Volume	183
DOIs	https://doi.org/10.1016/j.scriptamat.2020.03.032
Publication status	Published - 1 Jul 2020

Keywords

Additive manufacturing
Heterogenous microstructure
Laminated high-entropy alloy
Strength-plasticity synergy

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

More information

10.1016/j.scriptamat.2020.03.032

http://hdl.handle.net/10397/104158

Cite this

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title = "Additively manufactured CrMnFeCoNi/AlCoCrFeNiTi0.5 laminated high-entropy alloy with enhanced strength-plasticity synergy",

abstract = "In this study, we additively manufactured a CrMnFeCoNi/AlCoCrFeNiTi0.5 laminated high-entropy alloy (HEA), with alternating layers of both constituent materials, that exhibits enhanced strength-plasticity synergy during compression (yield strength up to 990 MPa and no complete fracture until 80% strain), surpassing those of monolithic bulk HEAs. The enhanced strength-plasticity synergy originates from heterogenous microstructures of ultra-hard body-centered-cubic equiaxed grains and soft face-centered-cubic columnar grains periodically arranged in the AlCoCrFeNiTi0.5 and CrMnFeCoNi lamellae, respectively. This study demonstrates a feasible and flexible way to design HEAs with heterogenous microstructures and superior mechanical properties.",

keywords = "Additive manufacturing, Heterogenous microstructure, Laminated high-entropy alloy, Strength-plasticity synergy",

author = "S. Guan and D. Wan and K. Solberg and F. Berto and T. Welo and Yue, {T. M.} and Chan, {K. C.}",

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T1 - Additively manufactured CrMnFeCoNi/AlCoCrFeNiTi0.5 laminated high-entropy alloy with enhanced strength-plasticity synergy

AU - Guan, S.

AU - Wan, D.

AU - Solberg, K.

AU - Berto, F.

AU - Welo, T.

AU - Yue, T. M.

AU - Chan, K. C.

PY - 2020/7/1

Y1 - 2020/7/1

N2 - In this study, we additively manufactured a CrMnFeCoNi/AlCoCrFeNiTi0.5 laminated high-entropy alloy (HEA), with alternating layers of both constituent materials, that exhibits enhanced strength-plasticity synergy during compression (yield strength up to 990 MPa and no complete fracture until 80% strain), surpassing those of monolithic bulk HEAs. The enhanced strength-plasticity synergy originates from heterogenous microstructures of ultra-hard body-centered-cubic equiaxed grains and soft face-centered-cubic columnar grains periodically arranged in the AlCoCrFeNiTi0.5 and CrMnFeCoNi lamellae, respectively. This study demonstrates a feasible and flexible way to design HEAs with heterogenous microstructures and superior mechanical properties.

AB - In this study, we additively manufactured a CrMnFeCoNi/AlCoCrFeNiTi0.5 laminated high-entropy alloy (HEA), with alternating layers of both constituent materials, that exhibits enhanced strength-plasticity synergy during compression (yield strength up to 990 MPa and no complete fracture until 80% strain), surpassing those of monolithic bulk HEAs. The enhanced strength-plasticity synergy originates from heterogenous microstructures of ultra-hard body-centered-cubic equiaxed grains and soft face-centered-cubic columnar grains periodically arranged in the AlCoCrFeNiTi0.5 and CrMnFeCoNi lamellae, respectively. This study demonstrates a feasible and flexible way to design HEAs with heterogenous microstructures and superior mechanical properties.

KW - Additive manufacturing

KW - Heterogenous microstructure

KW - Laminated high-entropy alloy

KW - Strength-plasticity synergy

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DO - 10.1016/j.scriptamat.2020.03.032

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JO - Scripta Materialia

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