INVESTIGATION OF THE EFFECTS OF PROCESSING VARIABLES AND FABRICATION TECHNIQUES UPON THE PROPERTIES OF INTERMETALLIC COMPOUNDS

Abstract

Intermetallic compounds of NbBe12, Nb2Be17, Nb2Be19, and Ta2Be17 were fabricated by uniaxial pressing and sintering techniques. Results of sintering studies on Nb2Be17 are discussed. The effects of particle size, stoichiometry, temperature, and time upon the sintered density, grain size, and strength of Nb2Be17 are described. A modulus of rupture evaluation is made on Nb2Be17 up to 2750 F, and results of tensile, Young's modulus, thermal conductivity, and oxidation studies are discussed. The feasibility of scaling-up to large and complicated shapes by isostatic pressing, slip casting, extrusion, hot pressing, and flame spraying is demonstrated. The temperature-pressure-flow characteristics of several beryllides at temperatures of 2750 to 3050 F are evaluated together with microstructural stability. The metallurgical fabrication techniques of forging, forming, and rolling as applied to Nb2Be17 are examined. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1962
Accession Number
AD0278807

Entities

People

  • Byron B. Lympany
  • Richard S. Truesdale

Tags

DTIC Thesaurus Topics

  • Casting (Fabrication)
  • Conductivity
  • Extrusion
  • Fabrication
  • Flame Spraying
  • Forging
  • Grain Size
  • Hot Pressing
  • Intermetallic Compounds
  • Isostatic Pressing
  • Material Forming Processes
  • Modulus Of Elasticity
  • Particle Size
  • Sintering
  • Slip Casting
  • Thermal Conductivity
  • Thermal Spraying

Fields of Study

  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Metallurgy
  • Thermal Physics or Thermal Science.