Cu添加对AlCoCrFeNiSi0.5Cux （x = 0.01, 0.05, 0.1）高熵合金组织、磨损和耐蚀性的影响

IF 4.4 3区工程技术 Q1 ENGINEERING, CIVIL

Archives of Civil and Mechanical Engineering Pub Date : 2024-12-10 DOI:10.1007/s43452-024-01102-5

Rafał Babilas, Mariola Kądziołka-Gaweł, Anna Bajorek, Piotr Gębara, Adrian Radoń, Tymon Warski, Oktawian Bialas, Monika Spilka, Wojciech Łoński, Katarzyna Młynarek-Żak

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引用次数: 0

摘要

叙述了铜的加入对AlCoCrFeNiSi0.5Cux高熵合金的组织和性能的影响。采用感应熔炼法制备慢冷锭，采用压力铸造法制备板状试样。结构研究证实了BCC/B2相的存在。铸锭中的微偏析与金属间相Cr3Si和Fe5Si3的形成有关。冷却速率的增加通过降低Cr和Si的迁移率来阻止偏析。超细磁场分布表明，BCC Fe（Co,Ni,Si,Cr）固溶体以片状形式形成。在3.5%-NaCl溶液中，铜含量最低的板材腐蚀电流密度最低，为0.04 μA/cm2。腐蚀后铝板的主要表面态突出了Al2O3的结合能。随着铜含量的增加，矫顽力有降低的趋势。铜的加入对AlCoCrFeNiSi0.5Cu0.1合金的耐磨性有积极的影响。

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Effect of Cu addition on microstructure, wear, and corrosion resistance of AlCoCrFeNiSi0.5Cux (x = 0.01, 0.05, 0.1) high-entropy alloys

The influence of copper addition on the structure and selected properties of AlCoCrFeNiSi_0.5Cu_x high-entropy alloys is described. Slowly cooled ingots were prepared by induction melting, and the samples in the form of plates were obtained by pressure casting. The conducted structural studies confirmed the presence of BCC/B2 phase. Microsegregation in the ingots was associated with the formation of intermetallic Cr₃Si and Fe₅Si₃ phases. An increase in the cooling rate stopped segregation by reducing the mobility of Cr and Si. The hyperfine magnetic field distributions indicated the formation of the BCC Fe(Co,Ni,Si,Cr) solid solution for alloys in the form of plates. The lowest corrosion-current density (0.04 μA/cm²) in 3.5%-NaCl solution was obtained for the plate with the lowest copper content. The dominated aluminum surface states for the post-corrosive plates highlighted the binding energies of Al₂O₃. A tendency of reduced coercivity with increased copper content was observed. The positive effect of copper addition on wear resistance was confirmed for the AlCoCrFeNiSi_0.5Cu_0.1 alloy.

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来源期刊

Archives of Civil and Mechanical Engineering 工程技术-材料科学：综合

CiteScore

6.80

自引率

9.10%

发文量

201

审稿时长

4 months

期刊介绍： Archives of Civil and Mechanical Engineering (ACME) publishes both theoretical and experimental original research articles which explore or exploit new ideas and techniques in three main areas: structural engineering, mechanics of materials and materials science. The aim of the journal is to advance science related to structural engineering focusing on structures, machines and mechanical systems. The journal also promotes advancement in the area of mechanics of materials, by publishing most recent findings in elasticity, plasticity, rheology, fatigue and fracture mechanics. The third area the journal is concentrating on is materials science, with emphasis on metals, composites, etc., their structures and properties as well as methods of evaluation. In addition to research papers, the Editorial Board welcomes state-of-the-art reviews on specialized topics. All such articles have to be sent to the Editor-in-Chief before submission for pre-submission review process. Only articles approved by the Editor-in-Chief in pre-submission process can be submitted to the journal for further processing. Approval in pre-submission stage doesn''t guarantee acceptance for publication as all papers are subject to a regular referee procedure.