The objective of this research is to achieve a suitable combination of strength and ductility in an aluminum matrix composite reinforced with high entropy alloy (HEA) particles by using the accumulative roll bonding (ARB) process. The novelty of this study is that several new high-entropy alloys have been used to fabricate new aluminum matrix composites by the ARB process and to find the optimal mechanical properties of the composite. For this purpose, three types of high entropy alloy with different chemical compositions were added to aluminum matrix composite by using the ARB process. The selection of high entropy alloys was based on the fact that all three types of crystal structures FCC, BCC, and FCC + BCC were formed in the composite production. The effect of the parameters of the number of rolling passes, weight percentage of HEA, and type of HEA was investigated on the tensile strength, elongation, hardness and microstructure of the composite. The results showed that the highest tensile strength and elongation were obtained for the sample produced with 2 wt% Al0.4- CoCr0.5NiFeTi0.6 at six rolling passes. Moreover, the highest hardness was obtained for sample produced with 4 wt% Al1.5MnCoCrNiFe. However, the samples produced with MnCoCrNiFe indicated the lowest tensile strength.

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