AI Article Synopsis
- The study uses molecular dynamic simulations to explore how twinned nanospheres respond to compression, focusing on the relationship between the applied load and deformation depth.
- It examines how different twin spacing and loading directions affect the elastic properties and plastic deformation mechanisms of the nanospheres.
- The findings reveal that twin boundaries strengthen the nanospheres by obstructing dislocation movement, with the effectiveness of this strengthening highly influenced by the distance between the twin boundaries.
Article Abstract
In the present study, we perform molecular dynamic simulations to investigate the compression response and atomistic deformation mechanisms of twinned nanospheres. The relationship between load and compression depth is calculated for various twin spacing and loading directions. Then, the overall elastic properties and the underlying plastic deformation mechanisms are illuminated. Twin boundaries (TBs) act as obstacles to dislocation motion and lead to strengthening. As the loading direction varies, the plastic deformation transfers from dislocations intersecting with TBs, slipping parallel to TBs, and then to being restrained by TBs. The strengthening of TBs depends strongly on the twin spacing.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4090678 | PMC |
| http://dx.doi.org/10.1186/1556-276X-9-335 | DOI Listing |
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