High-quality aluminium-CuZrNiAlTiW high-entropy alloy (HEA) composites were fabricated by mechanical alloying and spark plasma sintering (SPS). The microstructures, mechanical properties and corrosion resistance of these composites were investigated. The as-milled HEA powders consist of a single body-centered cubic (BCC) solid solution phase. Besides the Al and BCC phases, the NiAl-rich B2 and WAl₁₂ phases were in-situ formed in the sintered composites due to the large concentration gradient of Al between the matrix and HEA reinforcement. Compared to the SPS-ed Al bulk, the Al-HEA composites show higher microhardness and strength, caused by the dispersion strengthening of BCC phase and precipitation strengthening of B2 and WAl₁₂ phases, as well as the serious lattice distortion. The core-shell microstructure in the composite with 10 vol.% HEA (Al10) contributes to its good compression properties with high yield strength and good plasticity. The Al20 composite exhibits a high fracture strength of 544 MPa, owing to the uniform size and distribution of BCC particles. Additionally, W and Ni could improve the stability of protective layer, and thus enhance the pitting resistance of the Al-HEA composites in seawater. The Al10 composite possesses the relatively positive corrosion potential and low corrosion rate, revealing a good general corrosion resistance.

通过机械合金化和火花等离子体烧结（SPS）制备了高质量的铝-CuZrNiAlTiW高熵合金（HEA）复合材料。研究了这些复合材料的微观结构，力学性能和耐腐蚀性。研磨后的HEA粉末由单一的体心立方（BCC）固溶体相组成。除了Al和BCC相以外，由于基体和HEA增强材料之间的Al浓度梯度大，在烧结复合材料中原位形成了富NiAl的B2和WAl ₁₂相。与SPS-ed Al块相比，Al-HEA复合材料显示出更高的显微硬度和强度，这归因于BCC相的分散强化和B2和WAl _12的析出强化。相位，以及严重的晶格畸变。HEA（Al10）含量为10％（体积）的复合材料中的核-壳微观结构有助于其良好的压缩性能，高屈服强度和良好的可塑性。由于BCC颗粒的尺寸和分布均匀，Al20复合材料具有544 MPa的高断裂强度。另外，W和Ni可以改善保护层的稳定性，从而增强Al-HEA复合材料在海水中的耐点蚀性。Al10复合材料具有相对正的腐蚀电位和低腐蚀速率，显示出良好的一般耐腐蚀性。