Ni-based amorphous alloys in the Ni-Zr-Al-Y system that have high glass forming ability and large undercooled liquid regions

被引：15

作者：

Yi, S ^{[1
]}

Jang, JS ^{[1
]}

Kim, WT ^{[1
]}

Kim, DH ^{[1
]}

机构：

[1] Yonsei Univ, Dept Met Engn, Ctr Noncrystalline Mat, Seodaemun Ku, Seoul 120749, South Korea

来源：

MATERIALS LETTERS | 2001年 / 48卷 / 05期

关键词：

amorphous Ni-base quaternary; alloys; undercooling; nickel Ni-Zr-Al-Y alloys; melt spinning;

D O I：

10.1016/S0167-577X(00)00312-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ni-based amorphous alloys containing no metalloids are developed in the alloy system Ni-Zr-Al-Y. A partial replacement of Zr by Y significantly enhances the glass-forming ability and enlarges the undercooled liquid region during continuous heating of amorphous ribbons. A quaternary alloy Ni55Zr17Al11Y17 exhibits large undercooled liquid region (54 K) implying high glass-forming ability of the alloy. The glass transition and crystallization temperatures of the quaternary alloy obtained in a differential scanning calorimetry are 717 and 771 K, respectively. A fully amorphous rod (Phi1 mm) and a rod (Phi2 mm) having a high volume fraction (similar to 80%) of the amorphous phase can be prepared by copper mold injection casting. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：258 / 262

页数：5

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