Accession Number : ADA019657

Title :   Beryllium/Titanium Bimetal System.

Descriptive Note : Final rept. 10 Sep 73-5 Jun 75,

Corporate Author : PRATT AND WHITNEY AIRCRAFT WEST PALM BEACH FLA FLORIDA RESEARCH AND DEVELOPMENT CENTER

Personal Author(s) : Cox,Arthur R.

Report Date : 05 SEP 1975

Pagination or Media Count : 33

Abstract : The purpose of this program was to determine the engineering value of a powder metal beryllium/titanium material as applied to the F401 gas turbine engine. Two material types, one 50% beryllium by volume and the second 60% beryllium by volume, were selected for evaluation with respect to augmentor nozzle actuation links. Mechanical, metallurgical, and corrosion resistant tests were run for each material and parts designed and fabricated on the basis of these results. The fabricated link assemblies were tested against part operating criteria and the results showed that both materials easily surpassed the primary requirement of column buckling at 600 F. Also, in cyclic tests to determine component durability both materials were satisfactory. An attachment failure caused one of the two link configurations to fail prematurely; however, subsequent analysis showed this was correctable by a simple design modification. (Author)

Descriptors :   *Powder metals, *Titanium alloys, *Beryllium alloys, Powder metallurgy, Metallurgy, Corrosion resistance, Mechanical properties, Augmentation, Actuation, Turbofan engines, Thrust augmentor nozzles, Linkages

Subject Categories : Properties of Metals and Alloys
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE