Improvement/Suggestions:
For a 6xxx series alloy containing Cu-application fuselage civil air craft,
A) In term of manufacturing process prior –as supplied condition
fuselage civil air craft nee to high strength and ductility, therefore we should to make hardening and make annealing. Manufacturing process should be cutting->rolling->annealing->forging
B) Propose a heat treatment for the 6xxx series alloys containing Cu based on the application (fuselage civil air craft)
For high strength and minimize segregation from forging process.