TERNARY PHASE EQUILIBRIA IN TRANSITION METAL-BORON-CARBON-SILICON SYSTEMS. PART 2. TERNARY SYSTEMS. VOLUME 16. V-NB-C SYSTEM
Abstract
Phase equilibria in the ternary system vanadium-niobium-carbon from 800C through the melting ranges of the cubic monocarbide solid solutions were established on the basis of X-ray, melting point and metallographic studies. The phase equilibria above 1400C are presented in a three-dimensional temperature-composition constitutional diagram, since the phase equilibria below 1400C were not thoroughly investigated due to kinetic problems. Vanadium monocarbide and niobium monocarbide form a continuous series of solid solutions as do the low-temperature modification of the ordered hexagonal vanadium subcarbide to niobium subcarbide. However, the addition of vanadium subcarbide to niobium subcarbide stabilizes the high-temperature modification of the disordered hexagonal niobium subcarbide to about 1780C in the ternary field.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1967
- Accession Number
- AD0664344
Entities
People
- Y. A. Chang
Organizations
- Aerojet Rocketdyne Holdings