Plastic deformation induced anisotropy in metallic glasses: A molecular dynamics study
The atomic structure of a Cu13Ni34Pd53 metallic glass was studied by molecular dynamics simulation at different temperatures along a shear deformation cycle. A simulation box of 1 million atoms was deformed in the x axis and then the original orthogonal shape was recovered. Directional pair distribu...
| Authors: | , , , |
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| Format: | article |
| Publication Date: | 2017 |
| Country: | España |
| Institution: | Universitat Politècnica de Catalunya (UPC) |
| Repository: | UPCommons. Portal del coneixement obert de la UPC |
| Language: | English |
| OAI Identifier: | oai:upcommons.upc.edu:2117/105250 |
| Online Access: | https://hdl.handle.net/2117/105250 https://dx.doi.org/10.1016/j.jallcom.2016.12.233 |
| Access Level: | Open access |
| Keyword: | Anisotropy Molecular dynamics Deformations (Mechanics) Amorphous alloys Aging and rejuvenation Mechanical deformation Anisotropia Dinàmica molecular Deformacions (Mecànica) Àrees temàtiques de la UPC::Física |
| Summary: | The atomic structure of a Cu13Ni34Pd53 metallic glass was studied by molecular dynamics simulation at different temperatures along a shear deformation cycle. A simulation box of 1 million atoms was deformed in the x axis and then the original orthogonal shape was recovered. Directional pair distribution functions were computed in the coordinate planes and some significant directions along the shear deformation cycle. No anisotropy was found in the initial state, while post-deformation anisotropy was revealed by significant differences of the partial pair distribution functions. The analysis of atomic environments concluded that the remnant anisotropy remains constrained into the shear plane. Low temperature samples showed remnant anisotropy after the full shear sample, while close to the glass transition the anisotropy induced by the initial shear process is removed by the subsequent recovery process. |
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