Mechanical properties evolution for 8xxx foil stock materials by alloy optimization—literature review and experimental research

Abstract

In 8xxx aluminum foil alloys strength, formability, ductility, and softening behavior are influenced by various alloying elements. This paper provides a review about the latest findings in that field. The influence on the recrystallization of the alloying elements in their solute and precipitated form on one side and the processing route (homogenization, hot/cold rolling, inter/final annealing) on the other side are discussed. Particularly, the role of Fe and the emerging phases containing Fe as alloying element are discussed in detail. Finally, the results of industrially produced AA 8021 foils are presented which prove the quantitative influence of the Fe content on mechanical properties.