Inherent strength of zirconium-based bulk metallic glass

被引：10
|
作者：
Bakai, A. S. [1 ]
Shpak, A. P. [2 ]
Wanderka, N. [3 ]
Kotrechko, S. [2 ]
Mazilova, T. I. [1 ]
Mikhailovskij, I. M. [1 ]
机构：
[1] Natl Sci Ctr Kharkov Inst Phys & Technol, UA-61108 Kharkov, Ukraine
[2] Natl Acad Sci Ukraine, Kurdyumov Inst Met Phys, UA-03680 Kiev, Ukraine
[3] Helmholtz Zentrum Berlin Mat & Energie, D-14109 Berlin, Germany
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2010年 / 356卷 / 25-27期
关键词：
Atomic structure; Bulk amorphous metals; Strength; FIELD-EMISSION MICROSCOPY; ZR-TI; TUNGSTEN; CLUSTER; ALLOYS;
D O I：
10.1016/j.jnoncrysol.2010.03.009
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The polycluster morphology and inherent tensile strength of bulk metallic glass Zr41Ti14Cu12.5Ni10Be22.5 in the as-cast state were determined by means of high-field mechanical loading using field ion microscopy. The two-level cluster structure with the length scale of the order of 2 and 10 nm was revealed. It was disclosed that the strength of this alloy is characterized by a strong size-effect in a nanometer scale range. It is shown that within this size region the Weibull distribution is not suitable to describe the scale effect. It is ascertained that the limit level of shear strength of the examined glass is 5.8 GPa, and shear strength of a separate cluster may be estimated as 6.7 GPa. (C) 2010 Elsevier BM. All rights reserved.
引用
收藏
页码：1310 / 1314
页数：5
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