Accession Number : ADA019960

Title :   Optimization and Design Criteria for Beryllium/Titanium Composites.

Descriptive Note : Final rept. 1 Nov 73-30 Sep 75,

Corporate Author : GENERAL MOTORS CORP INDIANAPOLIS IND DETROIT DIESEL ALLISON DIV

Personal Author(s) : Spees,J. A. ; Stusrud,R. W. ; Sippel,G. R. ; Herman,M.

Report Date : SEP 1975

Pagination or Media Count : 220

Abstract : A program plan for evaluating beryllium/titanium composite materials with respect to method of manufacture, v/o Be extrusion and forging reduction is presented. Coextruded Be/Ti powders, as well as coextruded Be rod with a wrought Ti matrix was investigated. The most cost effective material/process was characterized and design criteria properties determined for gas turbine for gas turbine fan/compressor blades applications. The material from each vendor was received, isothermally forged and tensile tested at room temp. and 600F. Based on the tensile results and metallographic examination one type was selected for further property characterization. This characterization included creep, high and low cycle fatigue and ballistic impact.

Descriptors :   *Gas turbine blades, *Composite materials, Beryllium, Titanium, Forging, Composite structures, Metallography, Creep tests, Ballistic testing, Optimization, Temperature, Tensile properties, Photomicrography, Fatigue tests(Mechanics), Tensile strength, Fan blades

Subject Categories : Laminates and Composite Materials
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE