Relationship between fracture toughness, fracutre path, and microstructure of 7050 aluminum alloy: Part II. Multiple micromechanisms-based fracture toughness model

The effect of the second-stage aging process on the tensile properties, fracture toughness and electrical conductivity of 7050 aluminum alloy die forgings was studied, and the mechanism of strengthening and toughening was analyzed by transmission electron microscope and scanning electron microscope. The results show that with the extension of the second-stage aging time, the morphology of the precipitation phase remains unchanged, but the average radius of the precipitation phase and the distance between each other gradually increase. The fracture modes at this aging temperature are mixed fracture mechanisms of dimple fracture and intergranular fracture, and the number of dimple fractures increases with time. With the extension of the second-stage aging time, the strength of the alloy decreases, and the fracture toughness and stress corrosion resistance increase. The alloys heat-treated at 120°C×6 h +177°C×6~8 h two-stage aging process have excellent comprehensive properties.

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DURALCAN F3S.xxS

Alloy Digest ◽

10.31399/asm.ad.al0329 ◽

1994 ◽

Vol 43 (10) ◽

Keyword(s):

Fracture Toughness ◽

Silicon Carbide ◽

Compressive Strength ◽

Aluminum Alloy ◽

High Temperature ◽

Base Alloy ◽

Alloy Matrix ◽

Reinforced Composite ◽

Temperature Performance ◽

Aluminum Alloy Matrix

Abstract Duralcan F3S.xxS is a heat treatable aluminum alloy-matrix gravity composite. The base alloy is similar to Aluminum 359 (Alloy Digest Al-188, July 1969); the discontinuously reinforced composite is silicon carbide. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness and fatigue. It also includes information on high temperature performance. Filing Code: AL-329. Producer or source: Alcan Aluminum Corporation.

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IMPALCO 770

Alloy Digest ◽

10.31399/asm.ad.al0120 ◽

1962 ◽

Vol 11 (11) ◽

Keyword(s):

Fracture Toughness ◽

Corrosion Resistance ◽

Shear Strength ◽

Aluminum Alloy ◽

Physical Properties ◽

Tensile Properties ◽

High Strength ◽

Heat Treating ◽

High Strength Aluminum Alloy ◽

Structural Parts

Abstract IMPALCO 770 is a heat treatable, high strength aluminum alloy available in bar form for machining applications. It is recommended for highly stressed structural parts. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-120. Producer or source: Imperial Aluminium Company Ltd.

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FEDERATED F150.5

Alloy Digest ◽

10.31399/asm.ad.al0219 ◽

1975 ◽

Vol 24 (11) ◽

Keyword(s):

Fracture Toughness ◽

Aluminum Alloy ◽

High Temperature ◽

Physical Properties ◽

Tensile Properties ◽

High Strength ◽

Heat Treating ◽

Alloying Elements ◽

Light Weight ◽

Temperature Performance

Abstract FEDERATED F150.5 is a heat-treatable aluminum alloy containing silicon and copper as the major alloying elements. It is recommended for high-strength, light-weight, pressure-tight castings. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as casting, heat treating, machining, and joining. Filing Code: Al-219. Producer or source: Federated Metals Corporation, ASARCO Inc..

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KAISER ALUMINUM ALLOY 7050

Alloy Digest ◽

10.31399/asm.ad.al0366 ◽

2000 ◽

Vol 49 (1) ◽

Keyword(s):

Mechanical Properties ◽

Fracture Toughness ◽

Tensile Strength ◽

Aluminum Alloy ◽

Heat Treating ◽

High Fracture Toughness ◽

High Fracture ◽

Kaiser Aluminum ◽

Structural Parts ◽

Very High

Abstract Kaiser Aluminum Alloy 7050 has very high mechanical properties including tensile strength, high fracture toughness, and a high resistance to exfoliation and stress-corrosion cracking. The alloy is typically used in aircraft structural parts. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fracture toughness and fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: AL-366. Producer or source: Tennalum, A Division of Kaiser Aluminum.

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