Atomistic Simulation of Curvature Driven Grain Boundary Migration
dc.contributor.author | Upmanyu, Moneesh | en_US |
dc.contributor.author | Smith, R. W. | en_US |
dc.contributor.author | Srolovitz, David J. | en_US |
dc.date.accessioned | 2006-09-11T17:15:48Z | |
dc.date.available | 2006-09-11T17:15:48Z | |
dc.date.issued | 1998-02 | en_US |
dc.identifier.citation | Upmanyu, M.; Smith, R.W.; Srolovitz, D.J.; (1998). "Atomistic Simulation of Curvature Driven Grain Boundary Migration." Interface Science 6 (1-2): 41-58. <http://hdl.handle.net/2027.42/46004> | en_US |
dc.identifier.issn | 0927-7056 | en_US |
dc.identifier.issn | 1573-2746 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/46004 | |
dc.description.abstract | We present two dimensional molecular dynamics simulations of grain boundary migration using the half-loop bicrystal geometry in the experiments of Shvindlerman et al. We examine the dependence of steady-state grain boundary migration rate on grain boundary curvature by varying the half-loop width at constant temperature. The results confirm the classical result derived by absolute reaction rate theory that grain boundary velocity is proportional to the curvature. We then measure the grain boundary migration rate for fixed half-loop width at varying temperatures. Analysis of this data establishes an Arrhenius relation between the grain boundary mobility and temperature, allowing us to extract the activation energy for grain boundary migration. Since grain boundaries have an excess volume, curvature driven grain boundary migration increases the density of the system during the simulations. In simulations performed at constant pressure, this leads to vacancy generation during the boundary migration, making the whole migration process jerky. | en_US |
dc.format.extent | 903055 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Kluwer Academic Publishers; Springer Science+Business Media | en_US |
dc.subject.other | Chemistry | en_US |
dc.subject.other | Characterization and Evaluation Materials | en_US |
dc.subject.other | Grain Boundary Migration | en_US |
dc.subject.other | Molecular Dynamics | en_US |
dc.subject.other | Intrinsic Mobility | en_US |
dc.subject.other | Grain Boundary Curvature | en_US |
dc.subject.other | Absolute Reaction Rate Theory | en_US |
dc.subject.other | Point Defect Generation | en_US |
dc.subject.other | Anisotropic Mobility | en_US |
dc.title | Atomistic Simulation of Curvature Driven Grain Boundary Migration | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Biological Chemistry | en_US |
dc.subject.hlbsecondlevel | Chemistry | en_US |
dc.subject.hlbsecondlevel | Chemical Engineering | en_US |
dc.subject.hlbsecondlevel | Materials Science and Engineering | en_US |
dc.subject.hlbtoplevel | Engineering | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, 48109-2136, USA | en_US |
dc.contributor.affiliationum | Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, 48109-2136, USA | en_US |
dc.contributor.affiliationum | Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, 48109-2136, USA | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/46004/1/10793_2004_Article_151329.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1023/A:1008608418845 | en_US |
dc.identifier.source | Interface Science | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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