CoCuFeNi high entropy alloy reinforced by in-situ W particles

Huan Ma; Yang Shao; Chan Hung Shek

doi:10.1016/j.msea.2020.140218

CoCuFeNi high entropy alloy reinforced by in-situ W particles

Huan Ma
, Yang Shao
, Chan Hung Shek^*

^*Corresponding author for this work

Department of Materials Science and Engineering

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

38 Citations (Scopus)

Abstract

(CoCuFeNi)_100-xW_x (x = 0, 5, 15) high entropy alloys (HEAs) were prepared by arc melting. Five atomic percent of tungsten can completely dissolve into CoCuFeNi, forming face-centered cubic solid solution. In-situ W particles formed in CoCuFeNi matrix with 15 at.% W addition with semi-coherent interface between W particles and CoCuFeNi matrix. The yield strength of (CoCuFeNi)₈₅W₁₅ was increased by ~46% with minor reduction in ductility compared with CoCuFeNi HEA. The strengthening mechanisms for (CoCuFeNi)₈₅W₁₅ included solid solution strengthening, grain refinement strengthening as well as second phase strengthening. The ductility of (CoCuFeNi)₈₅W₁₅ was resulted from grain size refinement and the plasticity of W particles and CoCuFeNi.

Original language	English
Article number	140218
Journal	Materials Science and Engineering A
Volume	797
Online published	2 Sept 2020
DOIs	https://doi.org/10.1016/j.msea.2020.140218
Publication status	Published - 21 Oct 2020

Research Keywords

High entropy alloy
In-situ W particle
Mechanical property
Microstructure

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10.1016/j.msea.2020.140218

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@article{18ebfacae29d4116aa3cc7f10c2e6d7b,

title = "CoCuFeNi high entropy alloy reinforced by in-situ W particles",

abstract = "(CoCuFeNi)100-xWx (x = 0, 5, 15) high entropy alloys (HEAs) were prepared by arc melting. Five atomic percent of tungsten can completely dissolve into CoCuFeNi, forming face-centered cubic solid solution. In-situ W particles formed in CoCuFeNi matrix with 15 at.\% W addition with semi-coherent interface between W particles and CoCuFeNi matrix. The yield strength of (CoCuFeNi)85W15 was increased by \textasciitilde{}46\% with minor reduction in ductility compared with CoCuFeNi HEA. The strengthening mechanisms for (CoCuFeNi)85W15 included solid solution strengthening, grain refinement strengthening as well as second phase strengthening. The ductility of (CoCuFeNi)85W15 was resulted from grain size refinement and the plasticity of W particles and CoCuFeNi.",

keywords = "High entropy alloy, In-situ W particle, Mechanical property, Microstructure, High entropy alloy, In-situ W particle, Mechanical property, Microstructure, High entropy alloy, In-situ W particle, Mechanical property, Microstructure",

author = "Huan Ma and Yang Shao and Shek, \{Chan Hung\}",

year = "2020",

month = oct,

day = "21",

doi = "10.1016/j.msea.2020.140218",

language = "English",

volume = "797",

journal = "Materials Science and Engineering A",

issn = "0921-5093",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - CoCuFeNi high entropy alloy reinforced by in-situ W particles

AU - Ma, Huan

AU - Shao, Yang

AU - Shek, Chan Hung

PY - 2020/10/21

Y1 - 2020/10/21

N2 - (CoCuFeNi)100-xWx (x = 0, 5, 15) high entropy alloys (HEAs) were prepared by arc melting. Five atomic percent of tungsten can completely dissolve into CoCuFeNi, forming face-centered cubic solid solution. In-situ W particles formed in CoCuFeNi matrix with 15 at.% W addition with semi-coherent interface between W particles and CoCuFeNi matrix. The yield strength of (CoCuFeNi)85W15 was increased by ~46% with minor reduction in ductility compared with CoCuFeNi HEA. The strengthening mechanisms for (CoCuFeNi)85W15 included solid solution strengthening, grain refinement strengthening as well as second phase strengthening. The ductility of (CoCuFeNi)85W15 was resulted from grain size refinement and the plasticity of W particles and CoCuFeNi.

AB - (CoCuFeNi)100-xWx (x = 0, 5, 15) high entropy alloys (HEAs) were prepared by arc melting. Five atomic percent of tungsten can completely dissolve into CoCuFeNi, forming face-centered cubic solid solution. In-situ W particles formed in CoCuFeNi matrix with 15 at.% W addition with semi-coherent interface between W particles and CoCuFeNi matrix. The yield strength of (CoCuFeNi)85W15 was increased by ~46% with minor reduction in ductility compared with CoCuFeNi HEA. The strengthening mechanisms for (CoCuFeNi)85W15 included solid solution strengthening, grain refinement strengthening as well as second phase strengthening. The ductility of (CoCuFeNi)85W15 was resulted from grain size refinement and the plasticity of W particles and CoCuFeNi.

KW - High entropy alloy

KW - In-situ W particle

KW - Mechanical property

KW - Microstructure

KW - High entropy alloy

KW - In-situ W particle

KW - Mechanical property

KW - Microstructure

KW - High entropy alloy

KW - In-situ W particle

KW - Mechanical property

KW - Microstructure

UR - https://www.scopus.com/pages/publications/85090592736

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85090592736&origin=recordpage

U2 - 10.1016/j.msea.2020.140218

DO - 10.1016/j.msea.2020.140218

M3 - RGC 21 - Publication in refereed journal

SN - 0921-5093

VL - 797

JO - Materials Science and Engineering A

JF - Materials Science and Engineering A

M1 - 140218

ER -

CoCuFeNi high entropy alloy reinforced by in-situ W particles

Abstract

Research Keywords

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