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):

Report Date:

1970-08-01

Pagination or Media Count:

75.0

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,TiC1-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

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE