Accession Number : ADA018637

Title :   Applied High Temperature Technology Program. Volume I.

Descriptive Note : Final technical rept. 1 Jun 71-31 Jan 75,

Corporate Author : PRATT AND WHITNEY AIRCRAFT EAST HARTFORD CONN

Personal Author(s) : Hayes,Charles W. ; Jackson,J. J.

Report Date : OCT 1975

Pagination or Media Count : 266

Abstract : The initial effort consisted of the development of aircooled columbium and thoria dispersed (TD) cobalt vanes for installation in an advanced development engine. The redirected effort, covered in the report, continued this development by further characterizing the poor fatigue behavior of the coated SU-31 columbium alloy and substituting a directionally solidified eutectic alloy for the TD cobalt material. The gamma/gamma'+delta D.S. eutectic alloy was chosen for this program. A technology base for design of gamma/gamma'+delta D.S. eutectic hardware is presented. This includes: casting, coating, joining, hole drilling, and material property evaluation. Material laboratory tests are described and data presented. Applications to aircooled turbine hardware is discussed.

Descriptors :   *Turbine parts, *Eutectics, *Niobium alloys, Heat resistant alloys, Gas turbines, Vaneaxial fans, Airfoils, Refractory coatings, Nickel alloys, Casting, Joining, Drilling, Physical properties, Mechanical properties, High temperature

Subject Categories : Metallurgy and Metallography
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE