Shear-induced chemical segregation in a Fe-based bulk metallic glass at room temperature
Abstract Shear-induced segregation, by particle size, is known in the flow of colloids and granular media, but is unexpected at the atomic level in the deformation of solid materials, especially at room temperature. In nanoscale wear tests of an Fe-based bulk metallic glass at room temperature, with...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2021-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-92907-4 |
| _version_ | 1818856277588049920 |
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| author | D. V. Louzguine-Luzgin A. S. Trifonov Yu. P. Ivanov A. K. A. Lu A. V. Lubenchenko A. L. Greer |
| author_facet | D. V. Louzguine-Luzgin A. S. Trifonov Yu. P. Ivanov A. K. A. Lu A. V. Lubenchenko A. L. Greer |
| author_sort | D. V. Louzguine-Luzgin |
| collection | DOAJ |
| description | Abstract Shear-induced segregation, by particle size, is known in the flow of colloids and granular media, but is unexpected at the atomic level in the deformation of solid materials, especially at room temperature. In nanoscale wear tests of an Fe-based bulk metallic glass at room temperature, without significant surface heating, we find that intense shear localization under a scanned indenter tip can induce strong segregation of a dilute large-atom solute (Y) to planar regions that then crystallize as a Y-rich solid solution. There is stiffening of the material, and the underlying chemical and structural effects are characterized by transmission electron microscopy. The key influence of the soft Fe–Y interatomic interaction is investigated by ab-initio calculation. The driving force for the induced segregation, and its mechanisms, are considered by comparison with effects in other sheared media. |
| first_indexed | 2024-12-19T08:21:57Z |
| format | Article |
| id | doaj.art-14505648e19e4fcf8b2c7abd84b8e6f0 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T08:21:57Z |
| publishDate | 2021-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-14505648e19e4fcf8b2c7abd84b8e6f02022-12-21T20:29:23ZengNature PortfolioScientific Reports2045-23222021-07-0111111210.1038/s41598-021-92907-4Shear-induced chemical segregation in a Fe-based bulk metallic glass at room temperatureD. V. Louzguine-Luzgin0A. S. Trifonov1Yu. P. Ivanov2A. K. A. Lu3A. V. Lubenchenko4A. L. Greer5WPI Advanced Institute for Materials Research, Tohoku UniversityNational University of Science and Technology “MISiS”Department of Materials Science and Metallurgy, University of CambridgeMathematics for Advanced Materials-OIL, National Institute of Advanced Industrial Science and Technology (AIST)Department of General Physics and Nuclear Fusion, National Research University “Moscow Power Engineering Institute”WPI Advanced Institute for Materials Research, Tohoku UniversityAbstract Shear-induced segregation, by particle size, is known in the flow of colloids and granular media, but is unexpected at the atomic level in the deformation of solid materials, especially at room temperature. In nanoscale wear tests of an Fe-based bulk metallic glass at room temperature, without significant surface heating, we find that intense shear localization under a scanned indenter tip can induce strong segregation of a dilute large-atom solute (Y) to planar regions that then crystallize as a Y-rich solid solution. There is stiffening of the material, and the underlying chemical and structural effects are characterized by transmission electron microscopy. The key influence of the soft Fe–Y interatomic interaction is investigated by ab-initio calculation. The driving force for the induced segregation, and its mechanisms, are considered by comparison with effects in other sheared media.https://doi.org/10.1038/s41598-021-92907-4 |
| spellingShingle | D. V. Louzguine-Luzgin A. S. Trifonov Yu. P. Ivanov A. K. A. Lu A. V. Lubenchenko A. L. Greer Shear-induced chemical segregation in a Fe-based bulk metallic glass at room temperature Scientific Reports |
| title | Shear-induced chemical segregation in a Fe-based bulk metallic glass at room temperature |
| title_full | Shear-induced chemical segregation in a Fe-based bulk metallic glass at room temperature |
| title_fullStr | Shear-induced chemical segregation in a Fe-based bulk metallic glass at room temperature |
| title_full_unstemmed | Shear-induced chemical segregation in a Fe-based bulk metallic glass at room temperature |
| title_short | Shear-induced chemical segregation in a Fe-based bulk metallic glass at room temperature |
| title_sort | shear induced chemical segregation in a fe based bulk metallic glass at room temperature |
| url | https://doi.org/10.1038/s41598-021-92907-4 |
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