Amorphous (Zr-Y)60Al15Ni25 Alloys with Two Supercooled Liquid Regions

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Abstract

An amorphous phase exhibiting two distinguishable supercooled liquid regions was found in quaternary (Zr-Y)60Al15Ni25 alloys in which the main constituent elements of Zr and Y are immiscible in a solid state. The first- and second-stage supercooled liquid regions are observed in the temperature ranges of 640 to 664 K and 763 to 810 K, respectively, accompanied by the two-distinguishable exothermic peaks due to crystallization after the appearance of the supercooled liquid regions. The temperatures of the first- and the second-reactions appear to correspond to those for ternary Y60Al15Ni25and Zr60Al15Ni25 amorphous alloys, respectively. The simultaneous dissolution of the immiscible Zr and Y elements is essential for the appearance of the two-stage supercooled liquid regions. From the appearance of the second-stage supercooled liquid region, it is concluded that the precipitation of the primary crystalline phase does not exert detrious influence on the appearance of the supercooled liquid region. © 1992, The Japan Institute of Metals. All rights reserved.

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Zhang, T., Inoue, A., Chen, S., & Masumoto, T. (1992). Amorphous (Zr-Y)60Al15Ni25 Alloys with Two Supercooled Liquid Regions. Materials Transactions, JIM, 33(2), 143–145. https://doi.org/10.2320/matertrans1989.33.143

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