New centimeter-sized quaternary Ti-Zr-Be-Cu bulk metallic glasses with large glass forming ability

被引：18

作者：

Zhao, S. F. ^{[1
]}

Chen, N. ^{[1
]}

Gong, P. ^{[1
]}

Yao, K. F. ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 647卷

基金：

中国国家自然科学基金;

关键词：

Ti-based alloys; Bulk metallic glasses; Glass-forming ability; Mechanical properties; Thermal stability; MECHANICAL-PROPERTIES; SUPERCOOLED LIQUID; STABILITY; ALLOYS;

D O I：

10.1016/j.jallcom.2015.05.214

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

By replacing Be with Cu in ternary Ti-Zr-Be alloys, new centimeter-sized quaternary Ti-based bulk metallic glasses (BMGs) have been successfully synthesized in Ti41Zr25Be34-xCux (x = 2, 4, 6 and 8 at. %) and Ti45Zr20Be35-xCux (x = 2, 4, 6, 8 and 10 at. %) alloys. With the Cu addition, the glass-forming ability (GFA), the supercooled liquid range and the yield strength of the ternary Ti-Zr-Be glassy alloys are obviously improved. Among all the developed glassy alloys in the present study, the Ti41Zr25Be28Cu6 BMG has a critical diameter of 15 mm, which is the largest size in the quaternary Ti-based BMGs. The experimental results show that Cu is an effective element for improving the GFA of the Ti-Zr-Be glassy alloys. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：533 / 538

页数：6

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