Corrosive wear behavior of 2014 and 6061 aluminum alloy composites

Alloys of 2014 and 6061 aluminum reinforced with 0.1 volume fraction of alu mina particles (VFAP) were subjected to impact scratching during a corrosiv e wear process. The transient currents generated due to the impact were mea sured in the two composites as well as in their respective monoliths. The e ffect of solutionizing time on the transient currents was correlated to the near surface microstructures. scratch morphology, concentration of quenche d-in vacancies, and changes in grain sizes. It was observed that the transi ent current values increase with an increase in solutionizing time, indicat ing that the corrosive wear behavior is not strongly affected by the grain boundaries. However, a combination of pitting and the galvanic corrosion ma y account for the typical corrosive wear behavior exhibited by the alloys a nd the composites of this study.