Quantifying the differences in properties between polycrystals containing planar and curved grain boundaries
Journal article
Forrest, R.M., Lazar, E.A., Goel, S. and Bean, J.J. (2022). Quantifying the differences in properties between polycrystals containing planar and curved grain boundaries. Nanofabrication. 7, pp. 11-23. https://doi.org/10.37819/nanofab.007.250
Authors | Forrest, R.M., Lazar, E.A., Goel, S. and Bean, J.J. |
---|---|
Abstract | There are several methods in which grain boundaries can be made for the purposes of modelling, but most produce grains which are planar (flat). In this study, we have investigated the difference in materials properties between polycrystalline systems comprised of planar grain boundaries and curved grain boundaries. Several structural and mechanical properties for both systems were determined. For systems with curved grain boundaries, it was found that the elastic moduli are all larger in magnitude, the excess volumes are comparable, and the plastic properties are smaller. In addition, a grain tracking algorithm was used to determine the differences in the numbers of triple junctions detected between polycrystalline systems with planar and curved grain boundaries, this can be theoretically determined and compared to for a simple model system. We find that planar systems of grain boundaries possess significantly more triple junctions than systems of curved grain boundaries by a factor of two. There are also systematic differences between the two types of system when they undergo grain growth, particularly there is an anomalous close packed hexagonal phase which grows in the system of planar grain boundaries. |
Keywords | MD simulation; polycrystal |
Year | 2022 |
Journal | Nanofabrication |
Journal citation | 7, pp. 11-23 |
Publisher | De Gruyter |
ISSN | 2299-680X |
Digital Object Identifier (DOI) | https://doi.org/10.37819/nanofab.007.250 |
Web address (URL) | https://eaapublishing.org/journals/index.php/nanofab/about |
Publication dates | |
05 Dec 2022 | |
Publication process dates | |
Accepted | 22 Nov 2022 |
Deposited | 28 Nov 2022 |
Publisher's version | License File Access Level Open |
Accepted author manuscript | License File Access Level Controlled |
https://openresearch.lsbu.ac.uk/item/929z2
Download files
104
total views67
total downloads2
views this month2
downloads this month