| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Sao Paulo, Sao Carlos Sch Engn, BR-13566590 Sao Carlos, SP - Brazil
[2] Univ Ioannina, Dept Phys, GR-45110 Ioannina - Greece
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | COMPUTATIONAL MATERIALS SCIENCE; v. 104, p. 92-97, JUN 15 2015. |
| Web of Science Citations: | 3 |
| Abstract | |
In this work we demonstrate, by means of molecular dynamic simulations, that the topological instability caused by successive substitutions of Zr in the Cu lattice, or Cu in the Zr lattice towards a final alloy composition of Cu65Zr35, transform the initial systems to the same amorphous structure at 300 K. Such a structure, however, is composed of less ordered clusters, i.e. less icosahedral-like clusters in comparison with the same amorphous alloy produced by rapid quenching from the melt. After a short time annealing at 800 K the less ordered structure evolves towards the structure of the rapidly solidified sample. From these results it comes out that no structural differences are to be expected in metallic glasses produced by mechanical alloying and by rapid quenching; any differences found in metallic glasses produced by these two different routes should be attributed to insufficient alloying treatment during the mechanical alloying procedure. (C) 2015 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 11/17117-2 - Searching for new metallic glasses |
| Grantee: | Marcelo Falcão de Oliveira |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 12/20888-3 - Solid solution strain simulations compared with a topological model for glass formation in metallic alloys |
| Grantee: | Marcelo Falcão de Oliveira |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |