MICROSTRUCTURE AND EXTENDED SOLID SOLUBILITY OF Tb IN RAPIDLY SOLIDIFIED Ag-Tb ALLOY

Abstract

Abstract: The 0,05—0.08 mm thick splat foils of Ag-Tb alloy,containing Tb up to 10 at.-%,were made by the hammer-anvil technique.The cooling rate was in order of 10~6 K/s.The metastable extension of solid solubility of Tb in the alloy was measured to be up to 5 at.-% by lattice parameter method.The secondary phase in metastable eutectic structure was identi- fied as Ag_3Tb from diffraction pattern.The microstructure and micro-defect in as-quenched Ag-Tb splat foil were also observed.

Key words: rapid solidification, Ag-Tb alloy, solid solubility

NING Yuantao ZHO U Xinming LI Yongnian Kunming Institute of Precious Metals,Kunming,China. MICROSTRUCTURE AND EXTENDED SOLID SOLUBILITY OF Tb IN RAPIDLY SOLIDIFIED Ag-Tb ALLOY[J]. Acta Metallurgica Sinica (English Letters), 1991, 4(8): 143-146.

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MICROSTRUCTURE AND EXTENDED SOLID SOLUBILITY OF Tb IN RAPIDLY SOLIDIFIED Ag-Tb ALLOY

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