Formation Conditions and Properties of High-Entropy Alloys Creating σ-Phase

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
V. F. Gorban, M. O. Krapivka, O. M. Myslyvchenko
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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.

Abstract Image

产生σ相的高熵合金的形成条件和特性
研究了基于元素周期表 V-IX 族元素更新的高熵合金 (HEA),这些合金能够相互形成 σ 相。在电子浓度为 6.7-8 el/at 的范围内,对 σ 相的形成进行了监测。显示了电子浓度对双组分体系中形成 σ 相的含 HEA 元素中 σ 相含量的影响。确定了在多组分 HEA 结晶过程中形成 σ 相单相结构的条件。确定了 100% 高熵相的存在极限,并揭示了晶格参数对其性质的影响。σ相参数c和an的减小会导致高熵σ相单相结构合金的硬度和弹性模量增加。
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来源期刊
Materials Science
Materials Science 工程技术-材料科学:综合
CiteScore
1.60
自引率
44.40%
发文量
63
审稿时长
4-8 weeks
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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