Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1636707 | Transactions of Nonferrous Metals Society of China | 2015 | 7 Pages |
Abstract
Effect of network structure on plasticity and fracture mode of Zr-Al-Ni-Cu bulk metallic glasses (BMGs) was investigated. The microstructures of transversal and longitudinal sections were exposed by chemical etching and observed by scanning electron microscopy (SEM). The mechanical properties were examined by room-temperature uniaxial compression test. The results show that both plasticity and fracture mode are significantly affected by the network structure and the alteration occurs when the size of the network structure reaches up to a critical value. When the cell size (dc) of the network structure is â¼s3 μm, Zr-based BMGs characterize in plasticity that decreases with increasing dc. The fracture mode gradually transforms from single 45° shear fracture to double 45° shear fracture and then cleavage fracture with increasing dc. In addition, the mechanisms of the transition of the plasticity and the fracture mode for these Zr-based BMGs are also discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
An-hui CAI, Da-wei DING, Wei-ke AN, Guo-jun ZHOU, Yun LUO, Jiang-hong LI, Yong-yi PENG,