《7075 Aluminum Alloy》.pdf

7075 Aluminum Alloy Microstructure and Current Research through the use of In- situ X-ray Diffraction Outline  Why Al 7075?  General Aluminum Overview  Microstructure of 7075  Current Diffraction Research on Al 7075 Why Al 7075?  Aluminum is an abundant resource  Relatively cheap  High stiffness/density and strength/density ratios  Damage tolerant  Corrosion resistant compared with conventional alloys Uses of Al 7075  Gears and shafts  Aircraft  Other Aerospace and defense applications General Aluminum Alloy Overview Principal Aluminum Alloys Wrought alloys are divided into seven major classes Classes set by their principal alloy elements The seven classes can be subdivided:  Strengthened by work hardening  1XXX, 3XXX, 4XXX, 5XXX  Strengthened by heat treatment (precipitation hardening)  2XXX, 6XXX, and 7XXX Overview Work Hardened Precipitate Hardened  1XXX -Commercially • 2XXX - Al. Copper Pure Al. Alloys  3XXX - Al. • 6XXX - Al. Mg. Si. Manganese Alloys Alloys  4XXX - Al. Silicon • 7XXX - Al. Zinc Alloys Alloys QuickTime?and a TIFF (