Equation of Motion for a Grain Boundary

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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Author(s)

Detail(s)

Original languageEnglish
Article number246101
Journal / PublicationPhysical Review Letters
Volume119
Issue number24
Online published12 Dec 2017
Publication statusPublished - 15 Dec 2017
Externally publishedYes

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-85038361790&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(c8811f7c-7713-4a55-9b5c-80cb7f036e3a).html

Abstract

Grain boundary (GB) migration controls many forms of microstructural evolution in polycrystalline materials. Recent theory, simulations, and experiments demonstrate that GB migration is controlled by the motion of discrete line defects or disconnections. We present a continuum equation of motion for grain boundary derived from the underlying discrete disconnection mechanism. We also present an equation of motion for the junctions where multiple grain boundaries meet - as is always the case in a polycrystal. The resulting equation of motion naturally exhibits junction drag - a widely observed phenomena in junction dynamics in solids and liquids.

Research Area(s)

  • Disclinations & dislocations, grain boundaries, Line defects, ROUGHNESS

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Publication fingerprints text

100
Equation of Motion Physics
100
Grain Boundary Physics
100
Boundary Migration Engineering
100
Disconnections Engineering
50
Polycrystal Engineering
50
Microstructural Evo... Engineering
50
Polycrystalline Mat... Engineering
20
Polycrystalline Physics
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Citation Format(s)

[ RIS ] [ BibTeX ]
Equation of Motion for a Grain Boundary. / Zhang, Luchan; Han, Jian; Xiang, Yang et al.
In: Physical Review Letters, Vol. 119, No. 24, 246101, 15.12.2017.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review