Bulk glassy Cu-based alloys with a large supercooled liquid region of 110 K

被引：23

作者：

Inoue, A ^{[1
]}

Zhang, W

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Japan Sci & Technol Corp, Core Res Evolut Sci & Technol, Sendai, Miyagi 9808577, Japan

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 12期

关键词：

D O I：

10.1063/1.1613813

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The replacement of Cu by 5%Ag for Cu50Hf45Al5 glassy alloy was found to increase significantly the stability of supercooled liquid against crystallization. The supercooled liquid region reached as large as 110 K for Cu45Hf45Al5Ag5. The extension of the supercooled liquid region is due to an increase in the crystallization temperature, accompanying the change in the primary crystalline phases. The effectiveness of Ag addition was interpreted to result from the retardation of long-range atomic rearrangements for the progress of crystallization reaction. The selection of the quaternary composition enabled us to form bulk glassy alloys with diameters up to 3 mm. The Young's modulus and compressive fracture strength of the 5%Ag-containing alloy are 119 GPa and 2220 MPa, respectively. (C) 2003 American Institute of Physics.

引用

页码：2351 / 2353

页数：3