Chemical Inhomogeneity from the Atomic to the Macroscale in Multi-Principal Element Alloys: A Review of Mechanical Properties and Deformation Mechanisms

Jiaqi Zhu; Dongfeng Li; Linli Zhu; Xiaoqiao He; Ligang Sun

doi:10.3390/met13030594

Chemical Inhomogeneity from the Atomic to the Macroscale in Multi-Principal Element Alloys: A Review of Mechanical Properties and Deformation Mechanisms

Jiaqi Zhu
, Dongfeng Li
, Linli Zhu
, Xiaoqiao He^*
, Ligang Sun^*

^*Corresponding author for this work

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

12 Citations (Scopus)

74 Downloads (CityUHK Scholars)

Abstract

Due to their compositional complexity and flexibility, multi-principal element alloys (MPEAs) have a wide range of design and application prospects. Many researchers focus on tuning chemical inhomogeneity to improve the overall performance of MPEAs. In this paper, we systematically review the chemical inhomogeneity at different length scales in MPEAs and their impact on the mechanical properties of the alloys, aiming to provide a comprehensive understanding of this topic. Specifically, we summarize chemical short-range order, elemental segregation and some larger-scale chemical inhomogeneity in MPEAs, and briefly discuss their effects on deformation mechanisms. In addition, the chemical inhomogeneity in some other materials is also discussed, providing some new ideas for the design and preparation of high-performance MPEAs. A comprehensive understanding of the effect of chemical inhomogeneity on the mechanical properties and deformation mechanisms of MPEAs should be beneficial for the development of novel alloys with desired macroscopic mechanical properties through rationally tailoring chemical inhomogeneity from atomic to macroscale in MPEAs. © 2023 by the authors.

Original language	English
Article number	594
Number of pages	18
Journal	Metals
Volume	13
Issue number	3
Online published	15 Mar 2023
DOIs	https://doi.org/10.3390/met13030594
Publication status	Published - Mar 2023

Funding

This work is supported by the Research Grants Council of the Hong Kong Special Administrative Region, China under grant number CityU 11203022; the National Natural Science Foundation of China under grant number 12002108; the Guangdong Basic and Applied Basic Research Foundation under grant numbers 2020A1515110236 and 2022A1515011402; and the Shenzhen Municipal Science and Technology Innovation Council under grant number ZDSYS20210616110000001.

Research Keywords

multi-principal element alloys
chemical inhomogeneity
chemical short-range order
mechanical properties
STACKING-FAULT ENERGY
HIGH-ENTROPY ALLOYS
SHORT-RANGE ORDER
DISCRETE DISLOCATION DYNAMICS
INTERMEDIATE TEMPERATURE EMBRITTLEMENT
GRAIN-BOUNDARY SEGREGATION
STRENGTH-DUCTILITY SYNERGY
SINGLE-CRYSTAL SUPERALLOYS
NANOCRYSTALLINE CU
SOLUTE SEGREGATION

Publisher's Copyright Statement

This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

RGC Funding Information

RGC-funded

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10.3390/met13030594

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title = "Chemical Inhomogeneity from the Atomic to the Macroscale in Multi-Principal Element Alloys: A Review of Mechanical Properties and Deformation Mechanisms",

abstract = "Due to their compositional complexity and flexibility, multi-principal element alloys (MPEAs) have a wide range of design and application prospects. Many researchers focus on tuning chemical inhomogeneity to improve the overall performance of MPEAs. In this paper, we systematically review the chemical inhomogeneity at different length scales in MPEAs and their impact on the mechanical properties of the alloys, aiming to provide a comprehensive understanding of this topic. Specifically, we summarize chemical short-range order, elemental segregation and some larger-scale chemical inhomogeneity in MPEAs, and briefly discuss their effects on deformation mechanisms. In addition, the chemical inhomogeneity in some other materials is also discussed, providing some new ideas for the design and preparation of high-performance MPEAs. A comprehensive understanding of the effect of chemical inhomogeneity on the mechanical properties and deformation mechanisms of MPEAs should be beneficial for the development of novel alloys with desired macroscopic mechanical properties through rationally tailoring chemical inhomogeneity from atomic to macroscale in MPEAs. {\textcopyright} 2023 by the authors.",

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PY - 2023/3

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Chemical Inhomogeneity from the Atomic to the Macroscale in Multi-Principal Element Alloys: A Review of Mechanical Properties and Deformation Mechanisms

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GRF: A Combined Theoretical and Experimental Study on the Fabrication of Carbon Nanotube Networks

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Chemical Inhomogeneity from the Atomic to the Macroscale in Multi-Principal Element Alloys: A Review of Mechanical Properties and Deformation Mechanisms

Abstract

Funding

Research Keywords

Publisher's Copyright Statement

RGC Funding Information

Access Output

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Permanent Link

Other Files and Links

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GRF: A Combined Theoretical and Experimental Study on the Fabrication of Carbon Nanotube Networks

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