Development of lightweight magnesium composites reinforced with FeCoCrNiMn high entropy alloy via powder metallurgy

IF 6.9 Q1 Engineering

International Journal of Lightweight Materials and Manufacture Pub Date : 2026-03-01 Epub Date: 2025-10-01 DOI:10.1016/j.ijlmm.2025.09.004

P.M. Gopal , V. Kavimani , S. Suresh , S. Sudhagar

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Abstract

This study intends to develop and characterize the novel Magnesium (Mg) Metal Matrix Composite (MMC) reinforced with FeCoCrNiMn High Entropy Alloy (HEA) through powder metallurgy. The equiatomic FeCoCrNiMn HEA is synthesised through ball milling and mixed with Mg matrix at different weight percentages (0, 5, 10 and 15). The developed Mg and its HEA added composites were analysed for microstructure, density, microhardness, wear and corrosion behaviour. Composites with uniform HEA dispersion with minimal porosity was observed at lower reinforcement percentages and particle agglomeration was noted for 15 % HEA addition. The density of the Mg increased with HEA addition as a result of high dense filler and the microhardness was found increasing with every HEA addition concurrently the wear resistance increased. Enhancement in corrosion resistance with HEA addition is noted from the shifts towards more cathodic potentials and reduced corrosion rates. This study highlights the potential of HEA reinforcement to enhance the mechanical and corrosion properties of Mg-based composites for engineering applications.

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feccrnimn高熵合金增强轻量化镁复合材料的粉末冶金研究

本研究旨在通过粉末冶金方法制备FeCoCrNiMn高熵合金（HEA）增强镁（Mg）金属基复合材料（MMC）并对其进行表征。通过球磨合成等原子feccrnimn HEA，并以不同的质量百分比（0、5、10和15）与Mg基体混合。对制备的Mg及其HEA复合材料的显微组织、密度、显微硬度、磨损和腐蚀性能进行了分析。在较低的增强率下，复合材料具有均匀的HEA分散和最小的孔隙率；当HEA添加量为15%时，复合材料出现颗粒团聚现象。HEA的加入增加了镁合金的密度，镁合金的显微硬度随HEA的加入而增加，同时镁合金的耐磨性也随HEA的加入而增加。加入HEA后，材料的耐蚀性得到了增强，阴极电位增加，腐蚀速率降低。这项研究强调了HEA增强在工程应用中提高镁基复合材料的机械和腐蚀性能的潜力。

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