AlCrFeMnNi高熵合金颗粒增强铝基复合材料：微观结构、力学性能和耐腐蚀性能

Aluminium Matrix Composites Reinforced with AlCrFeMnNi HEA Particulates: Microstructure, Mechanical and Corrosion Properties.

作者信息

Ananiadis Elias A, Karantzalis Alexandros E, Sfikas Athanasios K, Georgatis Emmanuel, Matikas Theodore E

机构信息

Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece.

Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne NE1 8ST, UK.

出版信息

Materials (Basel). 2023 Aug 6;16(15):5491. doi: 10.3390/ma16155491.

DOI:10.3390/ma16155491

PMID:37570195

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10419924/

Abstract

Novel aluminium matrix composites have been fabricated using a powder metallurgy route with reinforcement phase particles of high entropy alloy (HEA) consisting of third transition metals. These new composites are studied as far as their microstructure (SEM, XRD), basic mechanical properties (hardness, elastic modulus) and creep response using nanoindentation techniques are concerned. Wear (sliding wear tests) and corrosion behaviour (in 3.5 wt.% NaCl environment) were also assessed. It was observed that, microstructurally, no secondary intermetallic phases were formed. Hardness and wear resistance seemed to increase with the increase in HEA particles, and in terms of corrosion, the composites exhibited susceptibility to localised forms. Nanoindentation techniques and creep response showed findings that are connected with the deformation nature of both the Al matrix and the HEA reinforcing phase.

摘要

采用粉末冶金路线，以由第三过渡金属组成的高熵合金（HEA）增强相颗粒制备了新型铝基复合材料。就其微观结构（扫描电子显微镜、X射线衍射）、基本力学性能（硬度、弹性模量）以及使用纳米压痕技术的蠕变响应而言，对这些新型复合材料进行了研究。还评估了磨损（滑动磨损试验）和腐蚀行为（在3.5 wt.% NaCl环境中）。观察到，在微观结构上，未形成二次金属间相。硬度和耐磨性似乎随着HEA颗粒的增加而提高，并且在腐蚀方面，复合材料表现出对局部腐蚀形式的敏感性。纳米压痕技术和蠕变响应显示出与铝基体和HEA增强相的变形性质相关的结果。