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- Title
Rapid solidification of ternary Nb-Y-Ni immiscible alloys.
- Authors
Zheng, W.; Yu, J.; Xin, L.; Su, M.; Fu, D.; Zhang, F.
- Abstract
The rapid solidification experiments have been carried out for the Nb(45-x)YxNi55 (x =9, 19, and 27) alloys. The microstructure characterization shows the occurrence of the liquid-liquid phase separation into the Niobium-rich and Yttrium-rich liquids. The Niobium-rich spherical particles were embedded in the glassy Yttriumrich matrix for the alloy Nb36Y9Ni55, while glassy Yttrium-rich ones were located in the glassy Niobium-rich matrix for the alloy Nb18Y27Ni55. A structure of hierarchical separation was detected in the as-quenched alloy Nb26Y19Ni55. The size distribution of the spherical particles in the as-quenched Nb(45-x)YxNi55 (x =9 and 27) alloys ranges from several nanometers to sub micrometer and is close to the Gaussian distribution. The average diameters of the Niobium-rich particles in the as-quenched Nb36Y9Ni55 alloy and the Yttrium-rich particles in the Nb18Y27Ni55 alloy are 0.23 µm and 0.15 μm, respectively. A dual-glass structure in the as-quenched Nb18Y27Ni55 alloy ribbon was determined by X-ray diffraction and transmission electron microscopy.
- Subjects
ALLOYS; GLASS-ceramics; SOLIDIFICATION; PARTICLE size distribution; TRANSMISSION electron microscopy; PHASE separation
- Publication
Materialwissenschaft und Werkstoffechnik, 2020, Vol 51, Issue 9, p1304
- ISSN
0933-5137
- Publication type
Article
- DOI
10.1002/mawe.201900008