Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures

Yi Li; Peijian Shi; Mingyang Wang; Yinpan Yang; Yan Wang; Yiqi Li; Yuebo Wen; Weili Ren; Na Min; Yan Chen; Yifeng Guo; Zhe Shen; Tianxiang Zheng; Ningning Liang; Wenjun Lu; Peter K. Liaw; Yunbo Zhong; Yuntian Zhu

doi:10.1080/21663831.2022.2078169

Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures

Yi Li
, Peijian Shi
, Mingyang Wang
, Yinpan Yang
, Yan Wang
, Yiqi Li
, Yuebo Wen
, Weili Ren
, Na Min
, Yan Chen
, Yifeng Guo
, Zhe Shen
, Tianxiang Zheng
, Ningning Liang
, Wenjun Lu
, Peter K. Liaw
, Yunbo Zhong
, Yuntian Zhu

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

34 Scopus citations

Abstract

Eutectic high-entropy alloys (EHEAs) feature attractive strength–ductility balance at both ambient and cryogenic temperatures. Nevertheless, microstructural origins underpinning these balanced mechanical properties remain elusive. Here the deformation mechanisms of a recently-reported Al₁₉Co₂₀Fe₂₀Ni₄₁ EHEA were comparatively investigated at 298 and 77 K, which revealed a high frequency and density of dislocation multi-slip scenario in the soft eutectic lamellae and the corresponding compatible co-deformation in the adjacent hard lamellae that collectively endowed strong hetero-deformation-induced (HDI) hardening and excellent forest-dislocation hardening. Therefore, better ductility and tensile strength, in comparison to the other widely-studied EHEA system, could be sustained even at liquid-nitrogen temperatures.

Original language	English
Pages (from-to)	602-610
Number of pages	9
Journal	Materials Research Letters
Volume	10
Issue number	9
DOIs	https://doi.org/10.1080/21663831.2022.2078169
State	Published - 2022
Externally published	Yes

Funding

The work was financially supported by National Key Research and Development Program of China [grant numbers 2018YFF0109404, 2016YFB0300401, 2016YFB0301401]; National Natural Science Foundation of China [grant numbers U1732276, U1860202] and National Natural Science Foundation of China [grant number 52004156].

Keywords

Eutectic high-entropy alloys
HDI hardening
compatible co-deformation
mechanical properties
multi-slip scenario

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10.1080/21663831.2022.2078169

Cite this

Li, Y., Shi, P., Wang, M., Yang, Y., Wang, Y., Li, Y., Wen, Y., Ren, W., Min, N., Chen, Y., Guo, Y., Shen, Z., Zheng, T., Liang, N., Lu, W., Liaw, P. K., Zhong, Y., & Zhu, Y. (2022). Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures. Materials Research Letters, 10(9), 602-610. https://doi.org/10.1080/21663831.2022.2078169

@article{a458afd3d3d54cd1ad18321c914b5c2a,

title = "Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures",

abstract = "Eutectic high-entropy alloys (EHEAs) feature attractive strength–ductility balance at both ambient and cryogenic temperatures. Nevertheless, microstructural origins underpinning these balanced mechanical properties remain elusive. Here the deformation mechanisms of a recently-reported Al19Co20Fe20Ni41 EHEA were comparatively investigated at 298 and 77 K, which revealed a high frequency and density of dislocation multi-slip scenario in the soft eutectic lamellae and the corresponding compatible co-deformation in the adjacent hard lamellae that collectively endowed strong hetero-deformation-induced (HDI) hardening and excellent forest-dislocation hardening. Therefore, better ductility and tensile strength, in comparison to the other widely-studied EHEA system, could be sustained even at liquid-nitrogen temperatures.",

keywords = "Eutectic high-entropy alloys, HDI hardening, compatible co-deformation, mechanical properties, multi-slip scenario",

author = "Yi Li and Peijian Shi and Mingyang Wang and Yinpan Yang and Yan Wang and Yiqi Li and Yuebo Wen and Weili Ren and Na Min and Yan Chen and Yifeng Guo and Zhe Shen and Tianxiang Zheng and Ningning Liang and Wenjun Lu and Liaw, \{Peter K.\} and Yunbo Zhong and Yuntian Zhu",

note = "Publisher Copyright: {\textcopyright} 2022 The Author(s). Published by Informa UK Limited, trading as Taylor \& Francis Group.",

year = "2022",

doi = "10.1080/21663831.2022.2078169",

language = "English",

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Li, Y, Shi, P, Wang, M, Yang, Y, Wang, Y, Li, Y, Wen, Y, Ren, W, Min, N, Chen, Y, Guo, Y, Shen, Z, Zheng, T, Liang, N, Lu, W, Liaw, PK, Zhong, Y & Zhu, Y 2022, 'Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures', Materials Research Letters, vol. 10, no. 9, pp. 602-610. https://doi.org/10.1080/21663831.2022.2078169

TY - JOUR

T1 - Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures

AU - Li, Yi

AU - Shi, Peijian

AU - Wang, Mingyang

AU - Yang, Yinpan

AU - Wang, Yan

AU - Li, Yiqi

AU - Wen, Yuebo

AU - Ren, Weili

AU - Min, Na

AU - Chen, Yan

AU - Guo, Yifeng

AU - Shen, Zhe

AU - Zheng, Tianxiang

AU - Liang, Ningning

AU - Lu, Wenjun

AU - Liaw, Peter K.

AU - Zhong, Yunbo

AU - Zhu, Yuntian

PY - 2022

Y1 - 2022

N2 - Eutectic high-entropy alloys (EHEAs) feature attractive strength–ductility balance at both ambient and cryogenic temperatures. Nevertheless, microstructural origins underpinning these balanced mechanical properties remain elusive. Here the deformation mechanisms of a recently-reported Al19Co20Fe20Ni41 EHEA were comparatively investigated at 298 and 77 K, which revealed a high frequency and density of dislocation multi-slip scenario in the soft eutectic lamellae and the corresponding compatible co-deformation in the adjacent hard lamellae that collectively endowed strong hetero-deformation-induced (HDI) hardening and excellent forest-dislocation hardening. Therefore, better ductility and tensile strength, in comparison to the other widely-studied EHEA system, could be sustained even at liquid-nitrogen temperatures.

AB - Eutectic high-entropy alloys (EHEAs) feature attractive strength–ductility balance at both ambient and cryogenic temperatures. Nevertheless, microstructural origins underpinning these balanced mechanical properties remain elusive. Here the deformation mechanisms of a recently-reported Al19Co20Fe20Ni41 EHEA were comparatively investigated at 298 and 77 K, which revealed a high frequency and density of dislocation multi-slip scenario in the soft eutectic lamellae and the corresponding compatible co-deformation in the adjacent hard lamellae that collectively endowed strong hetero-deformation-induced (HDI) hardening and excellent forest-dislocation hardening. Therefore, better ductility and tensile strength, in comparison to the other widely-studied EHEA system, could be sustained even at liquid-nitrogen temperatures.

KW - Eutectic high-entropy alloys

KW - HDI hardening

KW - compatible co-deformation

KW - mechanical properties

KW - multi-slip scenario

UR - https://www.scopus.com/pages/publications/85131651448

U2 - 10.1080/21663831.2022.2078169

DO - 10.1080/21663831.2022.2078169

M3 - Article

AN - SCOPUS:85131651448

SN - 2166-3831

VL - 10

SP - 602

EP - 610

JO - Materials Research Letters

JF - Materials Research Letters

IS - 9

ER -

Unveiling microstructural origins of the balanced strength–ductility combination in eutectic high-entropy alloys at cryogenic temperatures

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Keywords

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