Phase Equilibria in Nb-Si-Mo Ternary Alloys at 1273 K and 2073 K

被引：0
|
作者：
Huang Qiang
机构：
来源：
Chinese Journal of Aeronautics | 2008年 / 05期
关键词：
Nb/Nb5Si3 in-situ composite; isothermal section; phase equilibria; microstructure;
D O I：
暂无
中图分类号：
TG146.15 [];
学科分类号：
摘要：
Phase 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 obvi-ously 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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收藏
页码：448 / 454
页数：7
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