轻质铝基熵合金:概述与未来趋势  

Lightweight Al-based entropy alloys:Overview and future trend

作　　者：崔立莹 张展 陈晓光 Liying Cui;Zhan Zhang;X.-Grant Chen(Department of Applied Science,University of Quebec at Chicoutimi,555,boulevard de l’Universite,Saguenay G7H 2B1,QC,Canada)

机构地区：[1]Department of Applied Science,University of Quebec at Chicoutimi,555,boulevard de l’Universite,Saguenay G7H 2B1,QC,Canada

出　　处：《Science China Materials》2024年第1期31-46,共16页中国科学（材料科学）（英文版）

基　　金：supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) (RGPIN 05269-15 and CRDPJ 514651-17)。

摘　　要：新一代合金——高熵合金的出现,揭示了熵效应在合金设计中的重要意义.受这一概念的启发,轻质铝基熵合金这一概念被提出.随着对低密度结构材料的需求不断增加,这些新型合金在各种应用中具有巨大的潜力.本文综述了轻质铝基熵合金的发展背景、设计原理、制造方法、微观结构和力学性能、高温应用,及其发展前景.通过对当前研究的全面调查,本文重点研究分析了122种密度低于4.0 g cm-3的铝基熵合金.轻质铝基熵合金可以弥补传统铝和钛合金在机械性能和密度方面的差距.轻质铝基熵合金优异的热稳定性使其有望成为在高温下使用的结构材料.此外,本文还讨论了轻质铝基熵合金领域的未来发展趋势.机器学习作为有效计算工具,可以极大地提高合金的开发效率.The emergence of a new generation of alloys,namely high-entropy alloys,has revealed the significance of the entropy effect in alloy design.Inspired by this concept,lightweight Al-based entropy alloys have been proposed re-cently.With increasing demand for low-density structural materials,these new alloys have significant potential for di-verse applications.This review provides an overview of light-weight Al-based entropy alloys,covering their developmental background,design principles,fabrication methods,micro-structures,and mechanical properties,as well as alloys suitable for high-temperature applications.A comprehensive inves-tigation of current research on Al-based entropy alloys with a density lower than 4.0 g cm-3 was conducted from 122 dif-ferent alloys.Lightweight Al-based entropy alloys could bridge the gap between conventional Al and Ti alloys in terms of mechanical properties and density.The excellent thermal stabilities of these alloys make them attractive structural ma-terials for use at elevated temperatures.In addition,machine learning has been suggested as an effective computational tool for alloy development.Finally,future trends in the field of lightweight Al-based entropy alloys are discussed.

关 键 词：高温应用 合金设计 新型合金 机器学习 铝基 计算工具 高熵合金 微观结构 

分 类 号：TG139[一般工业技术—材料科学与工程]