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Structure of Nb–Mo–B Alloys in the Nb–NbB–MoB–Mo Region and Phase Equilibria at Melting–Solidification Temperatures

O.Potazhevskaya,
 
A.Bondar,
 
L.А.Duma,
 
V.B.Sobolev,
 
T.Velikanova
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Powder Metallurgy and Metal Ceramics: Springer, 2016, Т.11, #54
http://www.materials.kiev.ua/article/2282

Abstract

X-ray diffraction, metallography, and electron microprobe analysis are employed to study the Nb–Mo–B alloys in as-cast state and after annealing at subsolidus temperatures in the Nb–NbB–MoB–Mo region. The solidus temperatures are measured by pyrometry using the Pirani–Alterthum technique. The experimental data are used to construct the solidus and liquidus surfaces in the range up to 50 at.% B for the first time.


BORIDES, EUTECTIC, LIQUIDUS, NB–MO–B, PHASE DIAGRAM, SOLIDUS

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