A novel CoCrNiAl duplex phase high entropy alloy featuring body-centered tetragonal structure

Ning Xu; Dongpo Xuan; Han Guo; Yubo Huang; Xuming Liu; Shilei Li; Yan dong Wang; Junsheng Wang

doi:10.1016/j.intermet.2025.108868

A novel CoCrNiAl duplex phase high entropy alloy featuring body-centered tetragonal structure

Ning Xu, Dongpo Xuan, Han Guo, Yubo Huang, Xuming Liu, Shilei Li^*, Yan dong Wang^*, Junsheng Wang

^*Corresponding author for this work

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

Abstract

The body-centered tetragonal (BCT) metastable phases are usually observed during deformation and rarely after heat treatment. Here, we developed a novel dual-phase high-entropy alloy (HEA) featuring about 10 vol% blocky BCT and 90 vol% FCC phases by high temperature treatment. Our designed HEA exhibits a good strength–ductility balance, accompanied by a special fracture mode. This work not only advances the understanding of the intergranular cracking behaviors but also offers a strategy to develop new duplex HEAs with good work hardening.

Original language	English
Article number	108868
Journal	Intermetallics
Volume	185
DOIs	http://doi.org/10.1016/j.intermet.2025.108868
Publication status	Published - Oct 2025
Externally published	Yes

Keywords

Body-centered tetragonal structure
Dual-phase high-entropy alloy
Grain boundary structure
Phase boundary

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10.1016/j.intermet.2025.108868

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title = "A novel CoCrNiAl duplex phase high entropy alloy featuring body-centered tetragonal structure",

abstract = "The body-centered tetragonal (BCT) metastable phases are usually observed during deformation and rarely after heat treatment. Here, we developed a novel dual-phase high-entropy alloy (HEA) featuring about 10 vol\% blocky BCT and 90 vol\% FCC phases by high temperature treatment. Our designed HEA exhibits a good strength–ductility balance, accompanied by a special fracture mode. This work not only advances the understanding of the intergranular cracking behaviors but also offers a strategy to develop new duplex HEAs with good work hardening.",

keywords = "Body-centered tetragonal structure, Dual-phase high-entropy alloy, Grain boundary structure, Phase boundary",

author = "Ning Xu and Dongpo Xuan and Han Guo and Yubo Huang and Xuming Liu and Shilei Li and Wang, \{Yan dong\} and Junsheng Wang",

note = "Publisher Copyright: {\textcopyright} 2025",

year = "2025",

month = oct,

doi = "10.1016/j.intermet.2025.108868",

language = "English",

volume = "185",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - A novel CoCrNiAl duplex phase high entropy alloy featuring body-centered tetragonal structure

AU - Xu, Ning

AU - Xuan, Dongpo

AU - Guo, Han

AU - Huang, Yubo

AU - Liu, Xuming

AU - Li, Shilei

AU - Wang, Yan dong

AU - Wang, Junsheng

PY - 2025/10

Y1 - 2025/10

N2 - The body-centered tetragonal (BCT) metastable phases are usually observed during deformation and rarely after heat treatment. Here, we developed a novel dual-phase high-entropy alloy (HEA) featuring about 10 vol% blocky BCT and 90 vol% FCC phases by high temperature treatment. Our designed HEA exhibits a good strength–ductility balance, accompanied by a special fracture mode. This work not only advances the understanding of the intergranular cracking behaviors but also offers a strategy to develop new duplex HEAs with good work hardening.

AB - The body-centered tetragonal (BCT) metastable phases are usually observed during deformation and rarely after heat treatment. Here, we developed a novel dual-phase high-entropy alloy (HEA) featuring about 10 vol% blocky BCT and 90 vol% FCC phases by high temperature treatment. Our designed HEA exhibits a good strength–ductility balance, accompanied by a special fracture mode. This work not only advances the understanding of the intergranular cracking behaviors but also offers a strategy to develop new duplex HEAs with good work hardening.

KW - Body-centered tetragonal structure

KW - Dual-phase high-entropy alloy

KW - Grain boundary structure

KW - Phase boundary

UR - http://www.scopus.com/pages/publications/105007319481

U2 - 10.1016/j.intermet.2025.108868

DO - 10.1016/j.intermet.2025.108868

M3 - Article

AN - SCOPUS:105007319481

SN - 0966-9795

VL - 185

JO - Intermetallics

JF - Intermetallics

M1 - 108868

ER -

A novel CoCrNiAl duplex phase high entropy alloy featuring body-centered tetragonal structure

Abstract

Keywords

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