<p>In this study, an accumulative press bonding process (APB) is used to manufacture an AA1100/Al₂O₃ composite. Initially, Al/Al₂O₃ composites were manufactured via powder metallurgy, followed by warm roll bonding in four steps. To obtain the composites, the starting components were ground in a stainless steel ball mill in nitrogen at a pressure of 0.7 MPa for 24 hours at a speed of 450 rpm. During grinding, Al₂O₃ was mixed with Al 1100 alloy powder obtained by atomization. After milling, the resulting mixture was cold-pressed to form compact samples. The compaction was performed using a steel die at 750 MPa. Subsequently, the compacts were extruded at 550°C for 50 min. Al/Al₂O₃ samples produced by hot extrusion were preheated to 250°C for 10 min and pressed with a 50% reduction in thickness. A 100-ton press was used for pressing. This cycle was repeated four times. The corrosion resistance of the samples was measured using electrochemical impedance spectroscopy and potential dynamic polarization tests. The corrosion current density (J_corr), corrosion potential (E_corr), polarization resistance (R_p), and corrosion rate (C.Rat, mm/year; V_corr, μm/year) are investigated. A considerable improvement in the main electrochemical parameters was achieved for composites fabricated with higher press bonding steps. It was found that the APB process had a positive effect on the corrosion improvement of composite samples. Additionally, the electrochemical experiments demonstrated the positive influence of the APB process on the corrosion behavior.</p>