A constitutional diagram of the system TiC−HfC−WC

摘要

The system TiC−HfC−WC was investigated by means of melting point, differential thermoanalytical, X-ray diffraction and metallographic techniques on hot pressed and heat treated as well as melted alloy specimens and a complete constitutional diagram from 1500°C through the melting range established. According to the peritectic melting of hexagonal WC both isopleths, TiC−WC as well as HfC−WC show a class II reaction at 2760°C in Ti−W−C and at 273