Structural-phase state and microhardness of the surfacing formed on a steel substrate by pulsed argon tungsten arc remelting of Cu-tube containing W-Ta-Mo-Nb-Zr-Cr-Ti powder mixture

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL Intermetallics Pub Date : 2025-01-11 DOI:10.1016/j.intermet.2025.108639

Ivan A. Ditenberg, Ivan V. Smirnov, Denis A. Osipov, Konstantin V. Grinyaev

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Abstract

The results of a study of the features of the structural-phase state of the surfacing formed by remelting of a multicomponent precursor with an electric arc with a non-consumable tungsten electrode in a protective argon environment on a steel substrate are presented. A non-equiatomic mixture of refractory metal powders W-Ta-Mo-Nb-Cr-Zr-Ti after high-energy ball milling was used. It has been established that the resulting structural state is represented by several multicomponent phases that differ in elemental composition, type of crystal lattice, morphology and defect structure and can be described as a complex structural-phase composite. A smooth nature of the change in microhardness values was discovered as one moved from the lower part of the substrate to the upper boundary of the surfacing, which indicates the gradient nature of the structural-phase state. It is assumed that a decrease in the size of structural elements of dendrites in areas with a high density of high-strength phases is a consequence of the formation of a high density of nuclei during phase formation, the competing growth of which limits the size of these structural elements.

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本文介绍了一项研究结果，该研究通过在保护性氩气环境中使用非消耗性钨电极对多组分前驱体进行电弧重熔，在钢基板上形成了堆焊的结构相态特征。使用了经过高能球磨的非等原子难熔金属粉末 W-Ta-Mo-Nb-Cr-Zr-Ti 混合物。研究表明，所产生的结构状态由多个多组分相组成，这些相在元素组成、晶格类型、形态和缺陷结构方面均有所不同，可以被描述为复杂的结构相复合体。从基底的下部到堆焊的上部边界，显微硬度值的变化具有平滑性，这表明了结构相状态的梯度性质。据推测，在高强度相密集的区域，树枝状结构元素的尺寸会减小，这是由于在相形成过程中形成了高密度的晶核，晶核的竞争生长限制了这些结构元素的尺寸。

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来源期刊

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.