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Crystallization studies on amorphous AI-Y-Ni and AI-Y-Cu alloys

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Abstract

AI83Y10Ni7, AI80Y10Ni10 and AI80Y10Cu10 alloys were studied by the rapid solidification processing route. The glass-forming ability was found to decrease in the order of alloys mentioned above. Differential scanning calorimetry (DSC) of these amorphous alloys showed that the amorphous phase in AI-Y-Ni alloys has a higher thermal stability when compared to that in AI-Y-Cu alloys. A four-stage crystallization sequence could be identified for the AI-Y-Ni amorphous alloys. Even though the AI80Y10Cu10 alloy showed four exothermic peaks in the DSC study, a definite crystallization sequence could not be arrived at due to the coexistence of many crystalline phases along with the amorphous phase in the melt-spun condition.

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Goyal, A., Murty, B.S. & Ranganathan, S. Crystallization studies on amorphous AI-Y-Ni and AI-Y-Cu alloys. JOURNAL OF MATERIALS SCIENCE 28, 6091–6095 (1993). https://doi.org/10.1007/BF00365027

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