because its yield strength is above 500 MPa in the optimal aging conditions [5,6].This fact has motivated the investigation about how AA 7075 can be modified by introducing nanoparticles of partially yttria-stabilized Zroz (hard and chemically stable ceramic) with the aim to obtain adequate oxide dispersion strengthening (oDs by using ball milling processes. the aim to Previous studies have used Zro2 as reinforcement with improve the properties ofthe alloy. Fuentes-Ramirez et al. [7]improved the wear resistance of pure Al, using a surface treatment employing