Materials can be strengthened by nanoscale stacking faults
In contrast to the strength of single crystals, stacking faults (SFs) are usually an unfavorable factor that weakens materials. Using molecular-dynamics simulations, we find that parallel-spaced SFs can dramatically enhance the strength of zinc-blende SiC nanorods, which is even beyond that of their...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
Institute of Physics Publishing Ltd.
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/26918 |
| _version_ | 1848752121195790336 |
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| author | Wang, J. Shen, Y. Song, F. Ke, F. Bai, Y. Lu, Chunsheng |
| author_facet | Wang, J. Shen, Y. Song, F. Ke, F. Bai, Y. Lu, Chunsheng |
| author_sort | Wang, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In contrast to the strength of single crystals, stacking faults (SFs) are usually an unfavorable factor that weakens materials. Using molecular-dynamics simulations, we find that parallel-spaced SFs can dramatically enhance the strength of zinc-blende SiC nanorods, which is even beyond that of their single-crystal counterparts. Strengthening is achieved by restricting dislocation activities between nanoscale neighboring SFs and its overall upward trend is dominated by the volume fraction of SFs. The similar strengthening mechanism is also found in face-centered-cubic metals and their alloys. It is more promising than the traditional methods of decreasing nanoscale grains or twins due to the inverse Hall-Petch effect. This study sheds light on the structural design of nanomaterials with high strength. |
| first_indexed | 2025-11-14T08:03:35Z |
| format | Journal Article |
| id | curtin-20.500.11937-26918 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:03:35Z |
| publishDate | 2015 |
| publisher | Institute of Physics Publishing Ltd. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-269182018-03-29T09:08:49Z Materials can be strengthened by nanoscale stacking faults Wang, J. Shen, Y. Song, F. Ke, F. Bai, Y. Lu, Chunsheng In contrast to the strength of single crystals, stacking faults (SFs) are usually an unfavorable factor that weakens materials. Using molecular-dynamics simulations, we find that parallel-spaced SFs can dramatically enhance the strength of zinc-blende SiC nanorods, which is even beyond that of their single-crystal counterparts. Strengthening is achieved by restricting dislocation activities between nanoscale neighboring SFs and its overall upward trend is dominated by the volume fraction of SFs. The similar strengthening mechanism is also found in face-centered-cubic metals and their alloys. It is more promising than the traditional methods of decreasing nanoscale grains or twins due to the inverse Hall-Petch effect. This study sheds light on the structural design of nanomaterials with high strength. 2015 Journal Article http://hdl.handle.net/20.500.11937/26918 10.1209/0295-5075/110/36002 Institute of Physics Publishing Ltd. restricted |
| spellingShingle | Wang, J. Shen, Y. Song, F. Ke, F. Bai, Y. Lu, Chunsheng Materials can be strengthened by nanoscale stacking faults |
| title | Materials can be strengthened by nanoscale stacking faults |
| title_full | Materials can be strengthened by nanoscale stacking faults |
| title_fullStr | Materials can be strengthened by nanoscale stacking faults |
| title_full_unstemmed | Materials can be strengthened by nanoscale stacking faults |
| title_short | Materials can be strengthened by nanoscale stacking faults |
| title_sort | materials can be strengthened by nanoscale stacking faults |
| url | http://hdl.handle.net/20.500.11937/26918 |