Influence of plastic deformation on the corrosion behaviour of as-cast AIMg2 and AICu4Mg1 aluminium alloys in NaCI solution

摘要

The influence of plastic deformation on the corrosion behavior of as-cast AlMg2 and AlCu4Mgl aluminum alloys was studied at the microscale using the Electrochemical Microcell Technique and surface microgauges. It was shown that large strain gradients develop locally. The corrosion behavior of both alloys was affected by plastic deformation. The most active sites contain large strain gradients in AlMg2 and cracks with damage in the matrix in AlCu4Mgl.