摘要:
Aluminum alloys having an improved combination of properties are provided. In one aspect, a method for producing the alloy includes preparing an aluminum alloy for artificial aging and artificially aging the alloy. In one embodiment, the artificially aging step includes aging the aluminum alloy at a temperature of at least about 250° F., and final aging the aluminum alloy at a temperature of not greater than about 225° F. and for at least about 20 hours.
摘要:
Aluminum alloys having an improved combination of properties are provided. In one aspect, a method for producing the alloy includes preparing an aluminum alloy for artificial aging and artificially aging the alloy. In one embodiment, the artificially aging step includes aging the aluminum alloy at a temperature of at least about 250° F., and final aging the aluminum alloy at a temperature of not greater than about 225° F. and for at least about 20 hours.
摘要:
Aluminum alloy having an improved combination of properties are provided. In one aspect, a method for producing the alloy includes preparing an aluminum alloy for artificial aging and artificially aging the alloy. In one embodiment, the artificially aging step includes aging the aluminum alloy at a temperature of at least about 250° F., and final aging the aluminum alloy at a temperature of not greater than about 225° F. and for at least about 20 hours. These aluminum alloys realize an improved combination of properties, including improved strength with at least equivalent fatigue crack growth resistance.
摘要:
Aluminum alloy having an improved combination of properties are provided. In one aspect, a method for producing the alloy includes preparing an aluminum alloy for artificial aging and artificially aging the alloy. In one embodiment, the artificially aging step includes aging the aluminum alloy at a temperature of at least about 250° F., and final aging the aluminum alloy at a temperature of not greater than about 225° F. and for at least about 20 hours. These aluminum alloys realize an improved combination of properties, including improved strength with at least equivalent fatigue crack growth resistance.
摘要:
An aluminum-copper-magnesium alloy having ancillary additions of lithium. The alloy composition includes from about 3 to about 5 weight percent Cu, from about 0.5 to about 2 weight percent Mg, and from about 0.01 to about 0.9 weight percent Li. The combined amount of Cu and Mg is maintained below a solubility limit of the aluminum alloy. The alloys possess improved combinations of fracture toughness and strength, and also exhibit good fatigue crack growth resistance.
摘要:
An aluminum-copper-magnesium alloy having ancillary additions of lithium. The alloy composition includes from about 3 to about 5 weight percent Cu, from about 0.5 to about 2 weight percent Mg, and from about 0.01 to about 0.9 weight percent Li. The combined amount of Cu and Mg is maintained below a solubility limit of the aluminum alloy. The alloys possess improved combinations of fracture toughness and strength, and also exhibit good fatigue crack growth resistance.
摘要:
There is claimed an aerospace alloy having improved corrosion resistance performance, particularly intergranular corrosion resistance. The alloy consisting essentially of: about 0.6-1.15 wt. % silicon, about 0.6-1.0 wt. % copper, about 0.8-1.2 wt. % magnesium, about 0.55-0.86 wt. % zinc, less than about 0.1 wt. % manganese, about 0.2-0.3 wt. % chromium, the balance aluminum, incidental elements and impurities. While it is preferably made into sheet or plate product forms, it can also be extruded. Products made from this alloy exhibit at least about 5% greater yield strength and about 45% or greater resistance to intergranular corrosion attack than their 6013-T6 counterparts, as measured by average depth of corrosion after 24 hours exposure to an aqueous NaCl—H2O2 solution per ASTM Standard G110 (1992).
摘要:
A recrystallized aluminum alloy having brass texture and Goss texture, wherein the amount of brass texture exceeds the amount of Goss texture, and wherein the recrystallized aluminum alloy exhibits at least about the same tensile yield strength and fracture toughness as a compositionally equivalent unrecrystallized alloy of the same product form and of similar thickness and temper.
摘要:
Aluminum sheet products having highly anisotropic grain microstructures and highly textured crystallographic microstructures are disclosed. The products exhibit improved strength and improved resistance to fatigue crack growth, as well as other advantageous properties such as improved combinations of strength and fracture toughness. The sheet products are useful for aerospace and other applications, particularly aircraft fuselages.
摘要:
A recrystallized aluminum alloy having brass texture and Goss texture, wherein the amount of brass texture exceeds the amount of Goss texture, and wherein the recrystallized aluminum alloy exhibits at least about the same tensile yield strength and fracture toughness as a compositionally equivalent unrecrystallized alloy of the same product form and of similar thickness and temper.