Strong yet Ductile High Entropy Alloy Derived Nanostructured Cermet

Jingyang Zhang; Qing Yu; Qing Wang; Jia Li; Zhibo Zhang; Tianyu Wang; Shuo Shuang; Qihong Fang; Qiaoshi Zeng; Yong Yang

doi:10.1021/acs.nanolett.2c02097

Strong yet Ductile High Entropy Alloy Derived Nanostructured Cermet

Jingyang Zhang, Qing Yu, Qing Wang, Jia Li, Zhibo Zhang, Tianyu Wang, Shuo Shuang, Qihong Fang^*, Qiaoshi Zeng^*, Yong Yang^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

23 Citations (Scopus)

Abstract

Cermet is an important composite composed of ceramics and metals, which has widespread engineering applications but is notoriously known for its poor ductility. This work synthesizes freestanding cermet nanosheets through the reaction of high entropy alloy nanocrystals with the molecular structure of poly-vinyl alcohol, which results in a unique nanostructure consisting of metallic nanocrystals surrounded by complex amorphous ceramics. Atomic force microscopy indentation shows that such a high entropy alloy derived cermet is strong and tough at ambient temperature with a superb strength (∼3.2 GPa) and excellent ductility (∼50%), therefore overcoming the long-standing issue of brittleness facing conventional cermets.

Original language	English
Pages (from-to)	7370-7377
Journal	Nano Letters
Volume	22
Issue number	18
Online published	12 Sept 2022
DOIs	https://doi.org/10.1021/acs.nanolett.2c02097
Publication status	Published - 28 Sept 2022

Funding

The research of Y.Y. is supported by the research grant council (RGC), the Hong Kong government, through the general research fund (GRF) with the grant numbers of N_CityU 109/21, CityU11200719, and CityU11213118.

Research Keywords

cermet
high entropy alloy
multiple phase nanostructure
strength ductility trade-off
ultrathin film

RGC Funding Information

RGC-funded

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10.1021/acs.nanolett.2c02097

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Cite this

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title = "Strong yet Ductile High Entropy Alloy Derived Nanostructured Cermet",

abstract = "Cermet is an important composite composed of ceramics and metals, which has widespread engineering applications but is notoriously known for its poor ductility. This work synthesizes freestanding cermet nanosheets through the reaction of high entropy alloy nanocrystals with the molecular structure of poly-vinyl alcohol, which results in a unique nanostructure consisting of metallic nanocrystals surrounded by complex amorphous ceramics. Atomic force microscopy indentation shows that such a high entropy alloy derived cermet is strong and tough at ambient temperature with a superb strength (∼3.2 GPa) and excellent ductility (∼50%), therefore overcoming the long-standing issue of brittleness facing conventional cermets.",

keywords = "cermet, high entropy alloy, multiple phase nanostructure, strength ductility trade-off, ultrathin film",

author = "Jingyang Zhang and Qing Yu and Qing Wang and Jia Li and Zhibo Zhang and Tianyu Wang and Shuo Shuang and Qihong Fang and Qiaoshi Zeng and Yong Yang",

year = "2022",

month = sep,

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doi = "10.1021/acs.nanolett.2c02097",

language = "English",

volume = "22",

pages = "7370--7377",

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TY - JOUR

T1 - Strong yet Ductile High Entropy Alloy Derived Nanostructured Cermet

AU - Zhang, Jingyang

AU - Yu, Qing

AU - Wang, Qing

AU - Li, Jia

AU - Zhang, Zhibo

AU - Wang, Tianyu

AU - Shuang, Shuo

AU - Fang, Qihong

AU - Zeng, Qiaoshi

AU - Yang, Yong

PY - 2022/9/28

Y1 - 2022/9/28

N2 - Cermet is an important composite composed of ceramics and metals, which has widespread engineering applications but is notoriously known for its poor ductility. This work synthesizes freestanding cermet nanosheets through the reaction of high entropy alloy nanocrystals with the molecular structure of poly-vinyl alcohol, which results in a unique nanostructure consisting of metallic nanocrystals surrounded by complex amorphous ceramics. Atomic force microscopy indentation shows that such a high entropy alloy derived cermet is strong and tough at ambient temperature with a superb strength (∼3.2 GPa) and excellent ductility (∼50%), therefore overcoming the long-standing issue of brittleness facing conventional cermets.

AB - Cermet is an important composite composed of ceramics and metals, which has widespread engineering applications but is notoriously known for its poor ductility. This work synthesizes freestanding cermet nanosheets through the reaction of high entropy alloy nanocrystals with the molecular structure of poly-vinyl alcohol, which results in a unique nanostructure consisting of metallic nanocrystals surrounded by complex amorphous ceramics. Atomic force microscopy indentation shows that such a high entropy alloy derived cermet is strong and tough at ambient temperature with a superb strength (∼3.2 GPa) and excellent ductility (∼50%), therefore overcoming the long-standing issue of brittleness facing conventional cermets.

KW - cermet

KW - high entropy alloy

KW - multiple phase nanostructure

KW - strength ductility trade-off

KW - ultrathin film

UR - http://www.scopus.com/inward/record.url?scp=85138623369&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85138623369&origin=recordpage

U2 - 10.1021/acs.nanolett.2c02097

DO - 10.1021/acs.nanolett.2c02097

M3 - RGC 21 - Publication in refereed journal

C2 - 36095052

SN - 1530-6984

VL - 22

SP - 7370

EP - 7377

JO - Nano Letters

JF - Nano Letters

IS - 18

ER -

Strong yet Ductile High Entropy Alloy Derived Nanostructured Cermet

Abstract

Funding

Research Keywords

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NSFC: Two-Dimensional (2D) Metallic Glasses: From Synthesis, Physical/Mechanical Properties to Alloy Design

GRF: Development of Strong-yet-Ductile Nanograined Alloys with Intergranular Amorphous Films Based on Metallic-Glass Templates

GRF: The Development of Dual-Phase Fe-Based Metallic Glasses and Composites with Optimized Mechanical and Magnetic Properties

Cite this

Strong yet Ductile High Entropy Alloy Derived Nanostructured Cermet

Abstract

Funding

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

NSFC: Two-Dimensional (2D) Metallic Glasses: From Synthesis, Physical/Mechanical Properties to Alloy Design

GRF: Development of Strong-yet-Ductile Nanograined Alloys with Intergranular Amorphous Films Based on Metallic-Glass Templates

GRF: The Development of Dual-Phase Fe-Based Metallic Glasses and Composites with Optimized Mechanical and Magnetic Properties

Cite this