-, 2014 Introduction to Materials: 2014, copper alloy elements, known as the hard-molybdenum, high strength and good processing properties cut off, but poor corrosion resistance. Widely used in aircraft structures (skin, skeleton, rib beams, bulkheads, etc.) rivets, missile components, the card wheel hub, the propeller components and various other structures. Second, chemical composition and structure of 2014: its main chemical ingredients: Cu3.8-4.9-, Si0.5-, Fe0.5-, Mn0.3-0.9, Mg1.2-1.8, Zn0.25-, Cr0.1 -, Ti0.15-, three-, 2014, the development of heat treatment material specifications: 1) homogenization: Heat 475 ~ 490 ℃; insulation 12 ~ 14h; furnace cooling. 2) complete annealing: heating 350 ~ 400 ℃; with the effective thickness of different materials, heat preservation time 30 ~ 120min; to 30 ~ 50 ℃ / h speed with furnace cooling to 300 ℃, and then air cooling. 3) rapid thermal annealing: heating 350 ~ 460 ℃; holding time of 30 ~ 120min; air cooling. 4) quenching and aging: hardening 495 ~ 505 ℃, water; natural aging at room temperature 96h. Status: aluminum and aluminum alloy extruded bar (≤ 22mm, H112, T6 state)