高熵合金中的晶格畸变

杨勇; 赫全锋

doi:10.11900/0412.1961.2020.00359

金属学报 >

2021 , Vol. 57 >Issue 4: 385 - 392

DOI: https://doi.org/10.11900/0412.1961.2020.00359

综述

高熵合金中的晶格畸变

杨勇 ,
赫全锋

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^1.香港城市大学工学院机械工程系香港 999077
^2.香港城市大学工学院材料科学与工程系香港 999077

收稿日期: 2020-09-09

修回日期: 2020-12-13

网络出版日期: 2020-12-29

基金资助

香港研究资助局项目(CityU11200719)

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Lattice Distortion in High-Entropy Alloys

Yong YANG ,
Quanfeng HE

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^1.Department of Mechanical Engineering, College of Engineering, City University of Hong Kong, Hong Kong 999077, China
^2.Department of Materials Science and Engineering, College of Engineering, City University of Hong Kong, Hong Kong 999077, China

YANG Yong, professor, Tel: (00852)34429394, E-mail: yonyang@cityu.edu.hk

Received date: 2020-09-09

Revised date: 2020-12-13

Online published: 2020-12-29

Supported by

Research Grants Council, RGC(CityU11200719)

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摘要

传统上，晶格畸变被认为是高熵合金区别于普通合金的结构特征。然而如何理解和表征在高熵合金中的晶格畸变还是一个悬而未决的问题。本文以最近发表的理论工作(包括理论模型和第一性原理计算)和实验工作为基础，主要探讨在高熵合金(乃至成分复杂合金)中晶格畸变(以及伴生的内禀残余应力或应变场)的物理来源以及实验特征。

关键词： 高熵合金; 晶格畸变; 残余应变; 理论模型; 数值模拟

本文引用格式

杨勇 , 赫全锋 . 高熵合金中的晶格畸变[J]. 金属学报, 2021 , 57(4) : 385 -392 . DOI: 10.11900/0412.1961.2020.00359

Abstract

Lattice distortion has been deemed as one of the most distinctive structural features of high-entropy alloys. However, despite its fundamental importance, the notion of lattice distortion and its characterization is still an issue under debate. In this work, based on the recent work on theoretical modeling, atomistic simulations and experiments, the physical origin of lattice distortion in high-entropy alloys and its resultant intrinsic residual stresses or strains are discussed.

Key words： high-entropy alloy; lattice distortion; residual strain; theoretical modeling; numerical modeling

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