Mechanical behavior of bulk amorphous alloys reinforced by ductile particles at cryogenic temperatures

被引：88
作者：
Fan, C [1 ]
Li, HQ
Kecskes, LJ
Tao, KX
Choo, H
Liaw, PK
Liu, CT
机构：
[1] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37923 USA
[2] USA, Res Lab, Aberdeen Proving Ground, MD 21005 USA
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 14期
关键词：
D O I：
10.1103/PhysRevLett.96.145506
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The mechanical behavior of Zr-based bulk amorphous alloy composites (BAACs) was investigated at 77 K. The 5 vol. % Ta-BAAC maintained large plastic strains of similar to 13% with a 16% strength increase, when compared with that at 298 K. The interaction between shear bands and particles shows that shear extension in particles has limited penetration, and shear bands build up around particles. In addition to on the failure surface of the amorphous matrix, molten characteristics were also found on the surface of sheared particles. Pair distribution function studies were performed to understand the mechanical behavior.
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