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Abstract:
Practices for casting 25 and 35-inch diameter alloy 7050 ingot were developed; effects of fabricating variables on mechanical properties and corrosion characteristics were evaluated, and aging conditions were established to produce two tempers, T7651X and T7351X, having two combinations of strength, stress-corrosion characteristics, and toughness. Twenty extruded shapes were subsequently fabricated to provide material for determination of design mechanical properties, modulus of elasticity, stress-strain curves, fracture toughness (KIc), fatigue strengths, fatigue crack propagation rates, and stress-corrosion and corrosion characteristics. The alloy 7050 extrusions developed combinations of properties desired by the airframe industry that were superior to those of extrusions of commercially established aluminum alloys. (Author)
| Description: |
Final rept. Mar 73-Jun 76 |
| Pages: |
360 |
| Report Date: |
MAR 1977 |
| Contract Number: |
F3361573C5015 |
| Report Number: |
B087910 |
Report Unavailable |
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