Atomic-level observation of disclination dipoles in mechanically milled, nanocrystalline Fe

M. Murayama, J. M. Howe, H. Hidaka, S. Takaki

研究成果: Contribution to journalArticle査読

222 被引用数 (Scopus)

抄録

Plastic deformation of materials occurs by the motion of defects known as dislocations and disclinations. High-resolution transmission electron microscopy was used to directly reveal the individual dislocations that constitute partial disclination dipoles in nanocrystalline, body-centered cubic iron that had undergone severe plastic deformation by mechanical milling. The mechanisms by which the formation and migration of such partial disclination dipoles during deformation allow crystalline solids to fragment and rotate at the nanometer level are described. Such rearrangements are important basic phenomena that occur during material deformation, and hence, they may be critical in the formation of nanocrystalline metals by mechanical milling and other deformation processes.

本文言語英語
ページ(範囲)2433-2435
ページ数3
ジャーナルScience
295
5564
DOI
出版ステータス出版済み - 3 29 2002
外部発表はい

All Science Journal Classification (ASJC) codes

  • General

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