Ductile-brittle transition of carbon alloyed Fe40Mn40Co10Cr10 high entropy alloys

L. B. Chen; R. Wei; K. Tang; J. Zhang; F. Jiang; J. Sun

doi:10.1016/j.matlet.2018.10.144

Ductile-brittle transition of carbon alloyed Fe₄₀Mn₄₀Co₁₀Cr₁₀ high entropy alloys

L. B. Chen
, R. Wei
, K. Tang
, J. Zhang
, F. Jiang
, J. Sun

材料科学与工程学院

Xi'an Jiaotong University
Zhengzhou University

科研成果: 期刊稿件 › 文章 › 同行评审

60 引用（Scopus）

摘要

The mechanical behavior of (Fe₄₀Mn₄₀Co₁₀Cr₁₀)_100−xC_x (x = 0, 2.2, 3.3 at.%) high entropy alloys (HEA) at various temperatures (298 K, 159 K and 77 K) was investigated. For Fe₄₀Mn₄₀Co₁₀Cr₁₀ HEA, the jointly activated twinning and martensitic phase transformation concurrently increase the strength and ductility at 77 K. In contrast, twinning and phase transformation gradually vanish as temperature decreases for carbon alloyed HEAs, resulting in ductile-brittle transition. Our findings indicate that the additional interstitial carbon atoms increase the f.c.c. phase stability, and inhibit the deformability of Fe₄₀Mn₄₀Co₁₀Cr₁₀ HEA at low temperature.

源语言	英语
页（从-至）	416-419
页数	4
期刊	Materials Letters
卷	236
DOI	https://doi.org/10.1016/j.matlet.2018.10.144
出版状态	已出版 - 1 2月 2019

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10.1016/j.matlet.2018.10.144

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@article{eb78b31b8cce410b988d0f2a37c064f2,

title = "Ductile-brittle transition of carbon alloyed Fe40Mn40Co10Cr10 high entropy alloys",

abstract = "The mechanical behavior of (Fe40Mn40Co10Cr10)100−xCx (x = 0, 2.2, 3.3 at.\%) high entropy alloys (HEA) at various temperatures (298 K, 159 K and 77 K) was investigated. For Fe40Mn40Co10Cr10 HEA, the jointly activated twinning and martensitic phase transformation concurrently increase the strength and ductility at 77 K. In contrast, twinning and phase transformation gradually vanish as temperature decreases for carbon alloyed HEAs, resulting in ductile-brittle transition. Our findings indicate that the additional interstitial carbon atoms increase the f.c.c. phase stability, and inhibit the deformability of Fe40Mn40Co10Cr10 HEA at low temperature.",

keywords = "Deformation and fracture, Ductile-brittle transition, High entropy alloys, Metals and alloys, Microstructure, Phase transformation",

author = "Chen, \{L. B.\} and R. Wei and K. Tang and J. Zhang and F. Jiang and J. Sun",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2019",

month = feb,

day = "1",

doi = "10.1016/j.matlet.2018.10.144",

language = "英语",

volume = "236",

pages = "416--419",

journal = "Materials Letters",

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}

TY - JOUR

T1 - Ductile-brittle transition of carbon alloyed Fe40Mn40Co10Cr10 high entropy alloys

AU - Chen, L. B.

AU - Wei, R.

AU - Tang, K.

AU - Zhang, J.

AU - Jiang, F.

AU - Sun, J.

PY - 2019/2/1

Y1 - 2019/2/1

N2 - The mechanical behavior of (Fe40Mn40Co10Cr10)100−xCx (x = 0, 2.2, 3.3 at.%) high entropy alloys (HEA) at various temperatures (298 K, 159 K and 77 K) was investigated. For Fe40Mn40Co10Cr10 HEA, the jointly activated twinning and martensitic phase transformation concurrently increase the strength and ductility at 77 K. In contrast, twinning and phase transformation gradually vanish as temperature decreases for carbon alloyed HEAs, resulting in ductile-brittle transition. Our findings indicate that the additional interstitial carbon atoms increase the f.c.c. phase stability, and inhibit the deformability of Fe40Mn40Co10Cr10 HEA at low temperature.

AB - The mechanical behavior of (Fe40Mn40Co10Cr10)100−xCx (x = 0, 2.2, 3.3 at.%) high entropy alloys (HEA) at various temperatures (298 K, 159 K and 77 K) was investigated. For Fe40Mn40Co10Cr10 HEA, the jointly activated twinning and martensitic phase transformation concurrently increase the strength and ductility at 77 K. In contrast, twinning and phase transformation gradually vanish as temperature decreases for carbon alloyed HEAs, resulting in ductile-brittle transition. Our findings indicate that the additional interstitial carbon atoms increase the f.c.c. phase stability, and inhibit the deformability of Fe40Mn40Co10Cr10 HEA at low temperature.

KW - Deformation and fracture

KW - Ductile-brittle transition

KW - High entropy alloys

KW - Metals and alloys

KW - Microstructure

KW - Phase transformation

UR - https://www.scopus.com/pages/publications/85055486453

U2 - 10.1016/j.matlet.2018.10.144

DO - 10.1016/j.matlet.2018.10.144

M3 - 文章

AN - SCOPUS:85055486453

SN - 0167-577X

VL - 236

SP - 416

EP - 419

JO - Materials Letters

JF - Materials Letters

ER -

Ductile-brittle transition of carbon alloyed Fe40Mn40Co10Cr10 high entropy alloys

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Ductile-brittle transition of carbon alloyed Fe₄₀Mn₄₀Co₁₀Cr₁₀ high entropy alloys