Ni-based bulk amorphous alloys in the Ni-Ti-Zr-(Si,Sn) system

被引：114

作者：

Yi, S ^{[1
]}

Park, TG ^{[1
]}

Kim, DH ^{[1
]}

机构：

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

来源：

JOURNAL OF MATERIALS RESEARCH | 2000年 / 15卷 / 11期

关键词：

D O I：

10.1557/JMR.2000.0348

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New Ni-based bulk amorphous alloys in the alloy system Ni-Ti-Zr-(Si,Sn) were developed through systematic alloy design based upon the empirical rules for high glass forming alloys. Small additions of Si and/or Sn significantly improved the glass forming ability (GFA) of the alloys Ni57Ti23-xZr20(Si,Sn)(x) leading to a Ni-based bulk amorphous alloy. The amorphous ribbons of the alloys Ni57Ti23-xZr20(Si,Sn)(x) exhibited very high glass transition temperatures (T-g > 823 K), crystallization temperatures (T-x > 883 K), and large undercooled liquid regions (DeltaT(x) > 50 K) implying the high GFA of the alloys. Fully amorphous rods with the diameter of up to 2 mm can be fabricated by a copper mold casting method. Development of the new Ni-based bulk amorphous alloys having high T-g, T-x, and DeltaT(x) expands the practical applications of amorphous alloys as structural materials.

引用

页码：2425 / 2430

页数：6

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