A study on the microstructure, microhardness, and corrosion behavior of A413/Al2O3 composites has been carried out. Composites with 5, 10, and 15 wt.% of Al2O3 were produced by powder metallurgy (PM) method. Electrochemical techniques including potentiodynamic polarization curves, linear polarization resistance and electrochemical impedance spectroscopy were use to evaluate the corrosion behavior in 3.5 wt.% NaCl solution. Detailed electronic microscopy studies revealed that the surface of composites has a fairly uniform distribution of Al2O3 particles and a slight porosity content ranging from 2.59 to 3.83 % whereas X-ray diffraction patterns indicated the presence of the main phases Al, Si, along with reinforcement Al2O3 phase. The microhardness of the samples improved with the addition of alumina as reinforcement, obtaining the highest microhardness value for the composite A413-15 wt.% Al2O3 (104.5 HV). Electrochemical tests showed that the corrosion rate of the samples increased as the weight percent of Al2O3 increased, where the unreinforced A413 alloy exhibited the lowest corrosion rate. Corrosion process was charge controlled and remained unaltered by the addition of reinforcement. After the corrosion test, the composites evidence a type of localized corrosion such as crevice due to the galvanic effects between the A413 alloy matrix and the Al2O3 particles.