Concurrently improved strength-ductility synergy and strain-hardenability in metastable face-centered cubic high-entropy alloys through C-doping

H. Zhang; X. Y. Xue; M. J. Xue; J. S. Li; M. J. Lai

doi:10.1016/j.msea.2025.147978

Concurrently improved strength-ductility synergy and strain-hardenability in metastable face-centered cubic high-entropy alloys through C-doping

H. Zhang, X. Y. Xue, M. J. Xue, J. S. Li, M. J. Lai

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

Abstract

We have demonstrated that 1 at.% C-doping enhances both the strength-ductility synergy and strain-hardenability of the metastable face-centered cubic (fcc) single-phase Fe₅₀Mn₃₀Cr₁₀Si₁₀ high-entropy alloy (HEA), which exhibits transformation-induced plasticity (TRIP) effect. These enhancements result from interstitial solid solution hardening as well as a beneficial increase in fcc phase stability and stacking fault energy (SFE) due to C-doping. The increased phase stability and SFE activate deformation twinning and the formation of 9R structures, while preserving the TRIP effect. Our findings underscore C-doping as a promising strategy for designing novel high-performance metastable fcc single-phase HEAs.

Original language	English
Article number	147978
Journal	Materials Science and Engineering: A
Volume	926
DOIs	https://doi.org/10.1016/j.msea.2025.147978
State	Published - Mar 2025

Keywords

C-doping
High entropy alloys
Mechanical properties
Transformation-induced plasticity
Twinning-induced plasticity

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10.1016/j.msea.2025.147978

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title = "Concurrently improved strength-ductility synergy and strain-hardenability in metastable face-centered cubic high-entropy alloys through C-doping",

abstract = "We have demonstrated that 1 at.% C-doping enhances both the strength-ductility synergy and strain-hardenability of the metastable face-centered cubic (fcc) single-phase Fe50Mn30Cr10Si10 high-entropy alloy (HEA), which exhibits transformation-induced plasticity (TRIP) effect. These enhancements result from interstitial solid solution hardening as well as a beneficial increase in fcc phase stability and stacking fault energy (SFE) due to C-doping. The increased phase stability and SFE activate deformation twinning and the formation of 9R structures, while preserving the TRIP effect. Our findings underscore C-doping as a promising strategy for designing novel high-performance metastable fcc single-phase HEAs.",

keywords = "C-doping, High entropy alloys, Mechanical properties, Transformation-induced plasticity, Twinning-induced plasticity",

author = "H. Zhang and Xue, {X. Y.} and Xue, {M. J.} and Li, {J. S.} and Lai, {M. J.}",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier B.V.",

year = "2025",

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doi = "10.1016/j.msea.2025.147978",

language = "英语",

volume = "926",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

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TY - JOUR

T1 - Concurrently improved strength-ductility synergy and strain-hardenability in metastable face-centered cubic high-entropy alloys through C-doping

AU - Zhang, H.

AU - Xue, X. Y.

AU - Xue, M. J.

AU - Li, J. S.

AU - Lai, M. J.

PY - 2025/3

Y1 - 2025/3

N2 - We have demonstrated that 1 at.% C-doping enhances both the strength-ductility synergy and strain-hardenability of the metastable face-centered cubic (fcc) single-phase Fe50Mn30Cr10Si10 high-entropy alloy (HEA), which exhibits transformation-induced plasticity (TRIP) effect. These enhancements result from interstitial solid solution hardening as well as a beneficial increase in fcc phase stability and stacking fault energy (SFE) due to C-doping. The increased phase stability and SFE activate deformation twinning and the formation of 9R structures, while preserving the TRIP effect. Our findings underscore C-doping as a promising strategy for designing novel high-performance metastable fcc single-phase HEAs.

AB - We have demonstrated that 1 at.% C-doping enhances both the strength-ductility synergy and strain-hardenability of the metastable face-centered cubic (fcc) single-phase Fe50Mn30Cr10Si10 high-entropy alloy (HEA), which exhibits transformation-induced plasticity (TRIP) effect. These enhancements result from interstitial solid solution hardening as well as a beneficial increase in fcc phase stability and stacking fault energy (SFE) due to C-doping. The increased phase stability and SFE activate deformation twinning and the formation of 9R structures, while preserving the TRIP effect. Our findings underscore C-doping as a promising strategy for designing novel high-performance metastable fcc single-phase HEAs.

KW - C-doping

KW - High entropy alloys

KW - Mechanical properties

KW - Transformation-induced plasticity

KW - Twinning-induced plasticity

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U2 - 10.1016/j.msea.2025.147978

DO - 10.1016/j.msea.2025.147978

M3 - 文章

AN - SCOPUS:85216588133

SN - 0921-5093

VL - 926

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

M1 - 147978

ER -

Concurrently improved strength-ductility synergy and strain-hardenability in metastable face-centered cubic high-entropy alloys through C-doping

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Keywords

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