The Cr -- Ta -- C Melting Diagram in the (Cr) -- (Ta) -- (TaC) Region

• Published in: Powder metallurgy and metal ceramics Vol. 41; no. 7-8; pp. 400 - 406
• Main Authors: Velikanova, Tamara Ya, Bondar, Anatolii A
• Format: Journal Article
• Language: English
• Published: New York Springer Nature B.V 01.07.2002
• Subjects: Alloys; Chromium; Chromium base alloys; Construction; Melting; Phase diagrams; Solidus; Studies; Tantalum
• ISSN: 1068-1302; 1573-9066
• DOI: 10.1023/A:1021173211516

It has been found from an experimental study on alloys in the Cr -- Ta -- C system in the region of the (Cr) -- (Ta) -- (TaC) subsystem at melting (crystallization) temperatures that there are two nonvariant four-phase equilibria of congruent type: L^sub E^ (Ta) + (Ta^sub 2^C) + (TaCr^sub 2^) at 1935°C and L^sub E^ (TaC) + (Cr) + (TaCr^sub 2^) at 1675°C; there is also one four-phase nonvariant equilibrium of incongruent transition type: L^sub U^ + (Ta^sub 2^C) (TaC) + (TaCr^sub 2^) at 1943°C, and two nonvariant three-phase equilibria of congruent type: L^sub e^ (Ta^sub 2^C) + (TaCr^sub 2^) at 1960°C and L^sub e^ (TaC) + (Cr) at 1695°C. The phase diagram for the subsystem has been constructed in the form of projections of the solidus and liquidus surfaces, and a melting diagram has been constructed.[PUBLICATION ABSTRACT]