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- Publisher Website: 10.1016/j.actamat.2007.04.015
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Article: Atomic motion during the migration of general [0 0 1] tilt grain boundaries in Ni
Title | Atomic motion during the migration of general [0 0 1] tilt grain boundaries in Ni |
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Authors | |
Keywords | Grain boundary migration Atomistic mechanism Molecular dynamics |
Issue Date | 2007 |
Citation | Acta Materialia, 2007, v. 55, n. 13, p. 4527-4533 How to Cite? |
Abstract | We generalize a previous study of the atomic motions governing grain boundary migration to consider arbitrary misorientations of [0 0 1] tilt boundaries. Our examination of the nature of atomic motions employed three statistical measures of atomic motion: the non-Gaussian parameter, the "dynamic entropy" and the van Hove correlation function. These metrics were previously shown to provide a useful characterization of atomic motions both in glass-forming liquids and strained polycrystalline materials. As before, we find highly cooperative, string-like motion of atoms, but the grain boundary migration itself is a longer timescale process in which atoms move across the grain boundary. These observations are consistent with our previous results for Σ5 [0 0 1] tilt boundaries. It is evident from our work that the grain boundary structure and misorientation have a significant influence on the rate of grain boundary migration. © 2007 Acta Materialia Inc. |
Persistent Identifier | http://hdl.handle.net/10722/303304 |
ISSN | 2023 Impact Factor: 8.3 2023 SCImago Journal Rankings: 2.916 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhang, Hao | - |
dc.contributor.author | Srolovitz, David J. | - |
dc.contributor.author | Douglas, Jack F. | - |
dc.contributor.author | Warren, James A. | - |
dc.date.accessioned | 2021-09-15T08:25:02Z | - |
dc.date.available | 2021-09-15T08:25:02Z | - |
dc.date.issued | 2007 | - |
dc.identifier.citation | Acta Materialia, 2007, v. 55, n. 13, p. 4527-4533 | - |
dc.identifier.issn | 1359-6454 | - |
dc.identifier.uri | http://hdl.handle.net/10722/303304 | - |
dc.description.abstract | We generalize a previous study of the atomic motions governing grain boundary migration to consider arbitrary misorientations of [0 0 1] tilt boundaries. Our examination of the nature of atomic motions employed three statistical measures of atomic motion: the non-Gaussian parameter, the "dynamic entropy" and the van Hove correlation function. These metrics were previously shown to provide a useful characterization of atomic motions both in glass-forming liquids and strained polycrystalline materials. As before, we find highly cooperative, string-like motion of atoms, but the grain boundary migration itself is a longer timescale process in which atoms move across the grain boundary. These observations are consistent with our previous results for Σ5 [0 0 1] tilt boundaries. It is evident from our work that the grain boundary structure and misorientation have a significant influence on the rate of grain boundary migration. © 2007 Acta Materialia Inc. | - |
dc.language | eng | - |
dc.relation.ispartof | Acta Materialia | - |
dc.subject | Grain boundary migration | - |
dc.subject | Atomistic mechanism | - |
dc.subject | Molecular dynamics | - |
dc.title | Atomic motion during the migration of general [0 0 1] tilt grain boundaries in Ni | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.actamat.2007.04.015 | - |
dc.identifier.scopus | eid_2-s2.0-34250793301 | - |
dc.identifier.volume | 55 | - |
dc.identifier.issue | 13 | - |
dc.identifier.spage | 4527 | - |
dc.identifier.epage | 4533 | - |
dc.identifier.isi | WOS:000248436400029 | - |