{"title":"Formation Conditions and Properties of High-Entropy Alloys Creating σ-Phase","authors":"V. F. Gorban, M. O. Krapivka, O. M. Myslyvchenko","doi":"10.1007/s11003-024-00839-x","DOIUrl":null,"url":null,"abstract":"<p>High-entropy alloys (HEA) based on the renewal of elements of the V–IX groups of the Periodic Table, which are capable of forming σ-phase with each other, are studied. The formation of the σ-phase in the range of electronic concentration of 6.7-8 el/at was monitored. The effect of electron concentration on the content of the σ-phase in HEA-containing elements forming the σ-phase in a two-component system is shown. The conditions for the formation of a single-phase structure of the σ-phase during crystallization of multicomponent HEA are determined. The limits of the existence of a 100% high-entropy phase are established and the influence of lattice parameters on their properties is revealed. A decrease in the size of the parameters c and an of the σ-phase leads to an increase in both the hardness and modulus of elasticity of alloys with a single-phase structure of the high-entropy σ-phase.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s11003-024-00839-x","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
High-entropy alloys (HEA) based on the renewal of elements of the V–IX groups of the Periodic Table, which are capable of forming σ-phase with each other, are studied. The formation of the σ-phase in the range of electronic concentration of 6.7-8 el/at was monitored. The effect of electron concentration on the content of the σ-phase in HEA-containing elements forming the σ-phase in a two-component system is shown. The conditions for the formation of a single-phase structure of the σ-phase during crystallization of multicomponent HEA are determined. The limits of the existence of a 100% high-entropy phase are established and the influence of lattice parameters on their properties is revealed. A decrease in the size of the parameters c and an of the σ-phase leads to an increase in both the hardness and modulus of elasticity of alloys with a single-phase structure of the high-entropy σ-phase.
期刊介绍：
Materials Science reports on current research into such problems as cracking, fatigue and fracture, especially in active environments as well as corrosion and anticorrosion protection of structural metallic and polymer materials, and the development of new materials.
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