| Abstract: | Metallographic, x-ray diffraction, electron probe, and differential thermal analyses are used to study, the interaction of components of TiNi-Ni-ScNi alloys in the Sc-Ti-Ni system at subsolidus temperatures. The vertical section between TiNi and ScNi is shown to be quasibinary. No ternary compounds are observed in the TiNi-Sc-ScNi system. Six single-phase, nine two-phase, and four three-phase fields are found on the solidus of the TiNi-Ni-ScNi system. A characteristic feature of the structure of alloys of the Sc-Ti-Ni system in the region TiNi-Ni-ScNi ε is that the E phase is in equilibrium with the phases based on TiNi(δ), Ni(γ), ScNi2(λ2), Sc2Ni(v), SCNi5(ξ), and ScNi(δ). |
