Phase equilibria and phase transformations in the Ti-rich corner of the Fe-Ni-Ti system

Pier Luigi Riani (1) , Gabriele Cacciamani (1) , Yannick Thebault (2) , Jacques Lacaze (2)

1 UNIGE - Université de Genève = University of Geneva
2 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux

While the main features of the Fe-Ni-Ti system are well known at low Ti content, literature review of the Ti-rich corner revealed inconsistencies between experimental reports. This investigation presents new experimental results, defined to remove the uncertainties concerning melting behavior and solid-state phase equilibria of the (Ni,Fe)Ti2 phase with the adjacent (Fe,Ni)Ti (B2, CsCl-type structure) and Beta-Ti (A2, W-type) phases. Six samples have been prepared and examined by differential thermal analysis performed in yttria and alumina crucibles, and by scanning electron microscopy in the as-cast state as well as equilibrated at 900°C.

Mots clés: A. Ternary alloy systems; A. Intermetallics; miscellaneous; B. Phase diagrams; D. Microstructure

Domaines: Matériaux

Pier Luigi Riani, Gabriele Cacciamani, Yannick Thebault, Jacques Lacaze. Phase equilibria and phase transformations in the Ti-rich corner of the Fe-Ni-Ti system. Intermetallics, 2006, 14 (10-11), pp.1226-1230. ⟨10.1016/j.intermet.2005.09.011⟩. ⟨hal-03599351⟩