Retrogression heat treatment
= Retrogression heat treatment
{wiki=Retrogression_heat_treatment}
Retrogression heat treatment is a specialized thermal processing technique primarily used on certain aluminum alloys, especially those in the 2xxx and 7xxx series, which are heat-treatable alloys. The goal of retrogression is to enhance the mechanical properties of the aluminum, such as strength and toughness, by modifying the microstructure. \#\#\# Process Overview 1.