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

Technical Report · Thu Feb 01 04:00:00 EST 1962

OSTI ID:4812163

Truesdale, R S; Lympany, B B; Bielawski, C A; Grala, E M; Beaver, W W

Intermetallic compounds of NbBe/sub 12/, Nb/sub 2/Be/sub 17/, Nb/sub 2/ Be/sub and Ta/sub 2/Be/sub 17/ were fabricated by uniaxial pressing and sintering techniques. Results of sintering studies on Nb/sub 2/Be/sub 17/ are presented and discussed. The effects of particle size, stoichiometry, tempurature, and time upon the sintered density, grain size, and strength of Nb/sub 2/Be/sub 17/ are described. A modulus of rupture evaluation is made on Nb/sub 2/Be/sub 17/ up to 2750 deg 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 temperaturepressure-flow characteristics of several beryllides at temperatures of 2750 to 3050 deg are evaluated together with microstructural stability. The metallurgical fabriation techniques of forging, forming, and rolling as aplied to Nb/sub 2/Be/sub 17/ are examined. (auth

• Research Organization: Brush Beryllium Co., Cleveland
• NSA Number: NSA-16-025748
• OSTI ID: 4812163
• Report Number(s): ASD-TDR-62-476
• Country of Publication: United States
• Language: English

Related Subjects

BERYLLIUM ALLOYS
CASTING
COMBUSTION
DENSITY
EXTRUSION
FABRICATION
FORGING
GRAIN SIZE
HIGH TEMPERATURE
HOT WORKING
INTERMETALLIC COMPOUNDS
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM ALLOYS
OXIDATION
PARTICLES
PRESSURE
QUALITATIVE ANALYSIS
ROLLING
SINTERING
STABILITY
STRESSES
TANTALUM ALLOYS
TEMPERATURE
TENSILE PROPERTIES
THERMAL CONDUCTIVITY
YOUNG MODULUS