“Technology News Broadcast: The latest research shows that researchers have successfully prepared AlCrFeCoNiCu high entropy alloy coatings on aluminum alloy surfaces through laser deposition technology, significantly improving surface mechanical properties. They used Taguchi analysis and TOPSIS method to optimize the process parameters, enabling the determination of the optimal process parameters. The coating exhibits FCC and BCC phase structures, with a microhardness of 509 HV0.2, which is 5 times that of the substrate. This achievement provides a new effective way for surface strengthening of aluminum alloys.”