AMORPHOUS (ZR-Y)60AL15NI25 ALLOYS WITH 2 SUPERCOOLED LIQUID REGIONS

被引：13

作者：

ZHANG, T

INOUE, A

CHEN, S

MASUMOTO, T

机构：

[1] Tohoku University

[2] Institute for Materials Research, Tohoku University

来源：

MATERIALS TRANSACTIONS JIM | 1992年 / 33卷 / 02期

关键词：

AMORPHOUS PHASE; IMMISCIBLE ALLOY SYSTEM; ZIRCONIUM-YTTRIUM-ALUMINUM-NICKEL ALLOY; 2 SUPERCOOLED LIQUID REGIONS; 2-STAGE GLASS TRANSITION; 2-STAGE CRYSTALLIZATION;

D O I：

10.2320/matertrans1989.33.143

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 Y60Al15Ni25 and 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.

引用

页码：143 / 145

页数：3

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