Accession Number : AD0713150

Title :   EXPERIMENTAL PHASE EQUILIBRIA OF SELECTED BINARY, TERNARY, AND HIGHER ORDER SYSTEMS. PART VII. THE PHASE DIAGRAM Ti-V-C.

Descriptive Note : Technical rept. Apr 67-May 69,

Corporate Author : AEROJET-GENERAL CORP SACRAMENTO CALIF MATERIALS RESEARCH LAB

Personal Author(s) : Rudy,Edwin

Report Date : AUG 1970

Pagination or Media Count : 75

Abstract : The phase relationships in the Ti-V-C system were experimentally investigated by means of X-ray, melting point, DTA, and metallographic methods on heat-treated and melted specimens, and a phase from 1400C through the melting range established. The solid state equilibria are characterized by the monocarbide phases, and a limited Ti-exchange in V2C (15 At. % at 1400C); a wide two-phase equilibrium is formed between the carbon-deficient monocarbide solid solution and the metal phase. The V2C-solid solution is terminated by a three-phase equilibrium, V2C + (V,Ti)C1-x + (V,Ti)-ss, in the ternary. Four isothermal reactions occur in the system, of which three correspond to pseudobinary eutectic reactions, and the fourth to a ternary eutectic between metal, subcarbide, and monocarbide. The monocarbide solid solution has a minimum melting point of 2625C at a composition Ti-V-C (6-50-44 At.%). (Author)

Descriptors :   (*VANADIUM ALLOYS, PHASE STUDIES), (*TITANIUM ALLOYS, PHASE STUDIES), CARBON ALLOYS, PHASE DIAGRAMS, CARBIDES, SOLID SOLUTIONS, MELTING POINT, DIFFERENTIAL THERMAL ANALYSIS, MICROSTRUCTURE

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE