Phase equilibria in the Fe-Mo-W-C system containing (Mo 0.7W 0.3)C carbide

• Published in: Calphad 1984, Vol.8 (1), p.69-74
• Main Authors: Wada, T., Ohriner, E.K.
• Format: Article
• Language: English
• Subjects: Applied sciences; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Equations of state, phase equilibria, and phase transitions; Exact sciences and technology; Materials science; Metals, semimetals and alloys; Metals. Metallurgy; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Phase diagrams of metals and alloys; Physics; Specific materials; Specific phase transitions
• ISSN: 0364-5916; 1873-2984
• DOI: 10.1016/0364-5916(84)90028-2

A section of the phase diagram for the Fe-Mo-W-C system at 1273 K has been calculated for compositions which include (Mo 0.7W 0.3)C carbide as a constituent. In this region of the phase diagram, four carbides, namely cementite, MC, M 2C and M 6C (M = Mo, W and Fe) appear as stable phases together with austenite or ferrite, while only three carbides, i.e., cementite, MC and M 6C appear in the Fe-W-C system, and four carbides including Fe 2MoC (ξ) instead of MC in the Fe-Mo-C system. The presence of M 2C carbide in the Fe-(Mo 0. 7W 0.3)-C system is in agreement with observations on cemented carbide products with (Mo 0.7W 0.3)C.