2022
DOI: 10.1016/j.actamat.2022.118339
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Disconnection-mediated Twin/Twin-junction migration in FCC metals

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Cited by 10 publications
(8 citation statements)
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“…Using the GB velocity information shown in Figures – to conclude the effect of irradiation on GB mobility would require knowledge of the driving force for GBM (since velocity is the product of mobility and driving force), which is challenging to quantify accurately. Qualitatively, we believe that the increased GB velocities for the as-deposited, unirradiated Au films are related to an increased driving force associated with the smaller grains that are only present in these films. As stress is applied, small grains deform elastically whereas larger grains achieve lower stresses by deforming plastically.…”
mentioning
confidence: 99%
“…Using the GB velocity information shown in Figures – to conclude the effect of irradiation on GB mobility would require knowledge of the driving force for GBM (since velocity is the product of mobility and driving force), which is challenging to quantify accurately. Qualitatively, we believe that the increased GB velocities for the as-deposited, unirradiated Au films are related to an increased driving force associated with the smaller grains that are only present in these films. As stress is applied, small grains deform elastically whereas larger grains achieve lower stresses by deforming plastically.…”
mentioning
confidence: 99%
“…Although the comparison is not one-to-one (two different quantities are compared across very different length scales), the experiments call into question whether atomistic bicrystal migration simulations can give insight into anisotropic mobilities observed in polycrystalline materials. We believe that more detailed MD studies specifically targeted toward interesting experimental results are needed in nanocrystalline systems (as opposed to bicrystals), including studies of disconnection-mediated TJ migration along the lines of references (22,53) and measurement of velocity distributions of individual GBs.…”
Section: Atomistic Simulations Of Grain Boundary Migrationmentioning
confidence: 99%
“…The inability to account for the atomic structure along the entire 2D boundary has led the community to focus on particular GB types that may or may not be representative of general GB motion in polycrystals. Most studies focus on high-symmetry GBs in thin films (53,57,58) or bicrystals (59)(60)(61)(62). GBs in textured thin films have the advantage that neighboring grains have a common zone axis aligned so that atomic columns can be viewed simultaneously on both sides of the boundary.…”
Section: Microscopic Observations Of Grain Boundary Migrationmentioning
confidence: 99%
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