Heat Treatment of AA7075 by Electropulsing and DC Current Application

Abstract

Electrical resistivity was used in this test methodology to estimate the relative precipitate density in AA7075. Various electrical test parameters were explored to determine the difference between pulsed and DC-type currents. No difference between these test conditions could be distinguished. Furthermore, an electroplastic effect was not needed to explain these results and the effects are likely to be caused by purely joule heating.

Keywords

• electroplasticity
• retrogression heat treatment
• electropulsing
• electrically assisted manufacturing