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Schnelle Erstarrung von nicht mischbaren ternären NbYNi‐Legierungen
Author(s) -
Zheng W.,
Yu J.,
Xin L.,
Su M.,
Fu D.,
Zhang F.
Publication year - 2020
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.201900008
Subject(s) - yttrium , materials science , alloy , niobium , microstructure , ternary operation , transmission electron microscopy , micrometer , analytical chemistry (journal) , metallurgy , nanotechnology , oxide , chemistry , chromatography , optics , physics , computer science , programming language
The rapid solidification experiments have been carried out for the Nb (45‐x) Y x Ni 55 (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 Yttrium‐rich matrix for the alloy Nb 36 Y 9 Ni 55 , while glassy Yttrium‐rich ones were located in the glassy Niobium‐rich matrix for the alloy Nb 18 Y 27 Ni 55 . A structure of hierarchical separation was detected in the as‐quenched alloy Nb 26 Y 19 Ni 55 . The size distribution of the spherical particles in the as‐quenched Nb (45‐x) Y x Ni 55 (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 Nb 36 Y 9 Ni 55 alloy and the Yttrium‐rich particles in the Nb 18 Y 27 Ni 55 alloy are 0.23 μm and 0.15 μm, respectively. A dual‐glass structure in the as‐quenched Nb 18 Y 27 Ni 55 alloy ribbon was determined by X‐ray diffraction and transmission electron microscopy.