Effect of Severe Plastic Deformation, through Equal-Channel Angular Press Processing, on the Electrochemical Behavior of Al5083 Alloy  
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21 Centre of Excellence for Research in Engineering Materials, Deanship of Scientific Research, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia Engineering Management Department, College of Engineering, P.O. Box 66833, Prince Sultan University, Riyadh 11586, Saudi Arabia; [EMAIL_ADDRESS] Department of Industrial Engineering, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia; [EMAIL_ADDRESS]  
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distribution) influences the micro-scale electrochemical polarization, and consequently the corrosion behaviour of aluminium alloys [13; 14].  
The SPD of materials can be developed through the equal-channel angular pressing (ECAP) method [15]. In the recent years, ECAP has played an important role in comparing deformed materials with traditional coarse materials, because of its many advantages. The ECAP processes for Al alloys are significantly interesting in the automotive, aerospace, and building industries. Exceptional mechanical [15; 16; 17; 18; 19; 20; 21] and electrochemical properties [21; 22; 23; 24; 25; 26; 27] are observed in Al alloys because of ECAP.  
Equal-channel angular pressing (ECAP) is the most significant and attractive method by which the materials are extruded without any change in the cross-section, by subjecting them to very large shear strain. The processing method of ECAP includes pressing a billet by using a die consisting of two channels of equal cross-section, intersecting at a specified angle (\(\Phi\)). A very high shear strain is imposed on the material while it passes through the shear zone of the die [28; 29; 30]. After passing through the die, the billet exhibits no change in the cross-sectional area after the ECAP process; thus, it can be squeezed further for an additional number of passes. The distortion course can be shifted between the subsequent numbers of passes by turning the billets each time by 0\({}^{\circ}\) (route A), 90\({}^{\circ}\) rotation of the sample (route B\({}_{\text{A}}\)), 90\({}^{\circ}\) in the same heading (route B\({}_{\text{C}}\)), and 180\({}^{\circ}\) rotation (route C) [16]. The amount of strain imposed and the desired microstructural changes in the ECAP processed material can be varied by picking the suitable channel angle (\(\Phi\)), deformation route (as discussed above), and subjecting the material to the desired number of pressings [16; 31; 32; 33; 34; 35]. A broad examination on the ECAP process has been performed for several decades to process various engineering materials deemed to be used in applications that demand high strength [36; 37; 38; 39; 40; 41; 42; 43; 44]. For these engineering materials, the mechanical and wear properties are given more importance, and the ECAP process forms a significant strategy for preparing materials with improved properties [35; 36; 37; 38; 39].  
In this study, a financially accessible aluminum alloy (i.e., Al5083) is exposed to ECAP processing through route C to enhance its strength. Further examinations are performed to deal with the microstructural analysis and measurement of the electrochemical properties of the as-received and ECAP alloys.