Accession Number:

AD0902464

Title:

SST Technology Follow-On Program, Phase I. Mechanical and Metallurgical Characteristics of Titanium Alloy 6Al-4V.

Descriptive Note:

Final rept. on Task 1,

Corporate Author:

BOEING COMMERCIAL AIRPLANE CO SEATTLE WA

Personal Author(s):

• Parkinson, F. L.
• Spurr, W. F.

Report Date:

1972-07-01

Pagination or Media Count:

173.0

Abstract:

Mechanical, fracture, and metallurgical tests of Ti-6Al-4V which were halted at the cancellation of the SST program were reinitiated under the DOT Technology Follow-On program. These test data, supplemented by earlier data generated by the SST program, provided a sufficient data base for quantitative analysis of the factors that control Ti-6Al-4V mechanical and fracture properties. Data for continuously rolled sheet, hand-mill sheet, plate, extrusions, bar, and forgings were analyzed by regression analyses to relate alloy composition, microstructure, and crystallographic texture to the properties of strength, fracture toughness, and stress-corrosion resistance. The major variables affecting properties were oxygen and aluminum contents, texture, and ordering of the alpha phase formation of Ti3Al. Author

Descriptors:

• *AIRFRAMES
• *TITANIUM ALLOYS
• JET TRANSPORT AIRCRAFT
• MECHANICAL PROPERTIES
• CRACK PROPAGATION
• FRACTURE(MECHANICS)
• RODS
• SHEETS
• METAL PLATES
• MICROSTRUCTURE
• CRYSTAL STRUCTURE
• TENSILE PROPERTIES
• TOUGHNESS
• STRESS CORROSION
• CORROSION
• OXYGEN
• ALUMINUM
• YIELD POINT
• MODULUS OF ELASTICITY
• REGRESSION ANALYSIS
• EXTRUSION
• ROLLING(METALLURGY)
• NOTCH TOUGHNESS
• GRAIN STRUCTURES(METALLURGY)
• SUPERSONIC AIRCRAFT

Subject Categories:

• Transport Aircraft
• Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE