Effects of strain rate on properties of Zr-Cu-Al-Fe bulk metallic glasses with Nb addition

被引：4
作者：
Chen, Tao-Hsing [1 ]
Lin, Chi-Feng [2 ]
Wang, Jian-Yu [1 ]
机构：
[1] Natl Kaohsiung Univ Sci & Technol, Dept Mech Engn, Kaohsiung 807, Taiwan
[2] Natl Ctr High Performance Comp, Natl Appl Res Labs, Tainan 744, Taiwan
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2023年 / 293卷
关键词：
Bulk metallic glasses; Glass-forming ability; Strain-rate effect; Deformation and fracture; FORMING ABILITY; MECHANICAL-PROPERTIES; CORROSION BEHAVIOR; COMPRESSIVE BEHAVIOR; DEFORMATION-BEHAVIOR; SUPERCOOLED LIQUID; MINOR ADDITIONS; HIGH-STRENGTH; NI; PLASTICITY;
D O I：
10.1016/j.matchemphys.2022.126968
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The glass-forming ability (GFA), stress-strain relationships, and fracture characteristics of Zr60-xCu27Al8Fe5Nbx (x = 0, 1, 3 and 5 at%) bulk metallic glasses (BMGs) are investigated over a wide compressive strain rate range of 10-3 to 4 x 103 s-1 using a material testing system (MTS) and split-Hopkinson pressure bar (SHPB). The addition of Nb is found to increase the supercooled liquid region (Delta Tx) and parameter gamma (gamma = Tx/(Tg + Tl)) of the BMGs. For all of the tested alloys, the fracture stress increases with increasing strain rate. By contrast, the fracture strain decreases as the strain rate increases. The addition of 3 at% Nb results in the highest fracture stress and fracture strain. The fracture surface observations show that the fracture behavior of the BMGs is strongly related to the strain rate but is insensitive to the Nb content.
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页数：7
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