Accession Number : AD0902458

Title :   SST Technology Follow-On Program, Phase I. Compatibility of SST Materials with Titanium Alloys. Volume I. Flyaway Materials.

Descriptive Note : Final rept. on Task 1,

Corporate Author : BOEING CO SEATTLE WASH COMMERCIAL AIRPLANE GROUP

Personal Author(s) : Jacobsen,P. S. ; Senear,A. E.

Report Date : JUL 1972

Pagination or Media Count : 115

Abstract : This document presents data on the compatibility of titanium alloys Ti-8Al-1Mo-1V and Ti-6Al-4V with flyaway materials, materials which might contact titanium in the airplane during its operation, proposed for use on the U.S.A. supersonic transport. Testing procedures are described in detail and results are tabulated. Flyaway materials were applied to two types of test specimens: Heimerl-Braski self-stressed specimens, which were subjected to a bend deflection test following exposure, and simple U-bend specimens. For the Heimerl-Braski specimen configuration, a comparative statistical analysis of bend deflection test results was conducted. For the U-bend specimen configuration, stress corrosion, surface etch, and embrittlement effects were compared qualitatively. A rating of compatible or incompatible was assigned for each material-specimen-test parameter combination.

Descriptors :   (*AIRFRAMES, JET TRANSPORT PLANES), (*TITANIUM ALLOYS, STRESS CORROSION), MATERIALS, COMPATIBILITY, DEFLECTION, BENDING, SURFACE PROPERTIES, CRACK PROPAGATION, ETCHING, SURFACES, HYDROGEN EMBRITTLEMENT, SALTS, SILVER COMPOUNDS, CHELATE COMPOUNDS, CADMIUM, FATIGUE(MECHANICS), AERODYNAMIC HEATING, THERMAL STRESSES, FAILURE(MECHANICS), TEST METHODS, SUPERSONIC AIRCRAFT

Subject Categories : Transport Aircraft
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE