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Disclinations and disconnections in minerals and metals.

ABSTRACT: A different type of defect, the coherency disclination, is added to disclination types. Disconnections that include disclination content are considered. A criterion is suggested to distinguish disconnections with dislocation content from those with disclination content. Electron microscopy reveals unit disconnections in a low albite grain boundary, defects important in grain boundary sliding. Disconnections of varying step heights are displayed and shown to define both deformed and recovered structures.

SUBMITTER: Hirth JP

PROVIDER: S-EPMC6955374 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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Disclinations and disconnections in minerals and metals.

Hirth John P JP Hirth Greg G Wang Jian J

Proceedings of the National Academy of Sciences of the United States of America 20191217 1

A different type of defect, the coherency disclination, is added to disclination types. Disconnections that include disclination content are considered. A criterion is suggested to distinguish disconnections with dislocation content from those with disclination content. Electron microscopy reveals unit disconnections in a low albite grain boundary, defects important in grain boundary sliding. Disconnections of varying step heights are displayed and shown to define both deformed and recovered str ...[more]

PMID: 31848243

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