Phase Equilibria in Nb-Si-Mo Ternary Alloys at 1 273 K and 2 073 K
- Qiang, Huang
- Chaoli, Ma
- Xinqing, Zhao
- Huibin, Xu
Publication date
October 2008
DOI Publisher
Chinese Journal of Aeronautics. Production and hosting by Elsevier B.V.Abstract
AbstractPhase equilibrium in Nb-Si-Mo ternary alloys (<37.5 at.% Si) at 1 273 K and 2 073 K is investigated by using X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The partial isothermal section at 1 273 K, which contains four single-phase regions, five two-phase regions and two three-phase regions, is basically the same as that at 1 973 K. However, when the temperature increases to 2 073 K, the three-phase region of Nbss+α-(Nb(Mo))5Si3+β-(Nb, Mo)5Si3 obviously moves towards the Nb-rich corner. This suggests that Nb-Si-Mo ternary alloys remain stable at least up to 1 973 K
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