Dislocation structure of 10° low-angle tilt grain boundary in α-Al2O3

E. Tochigi, A. Nakamura, N. Shibata, T. Yamamoto, K. P.D. Lagerlöf, Y. Ikuhara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Dislocation structure of 10° low-angle tilt grain boundary in α-Al2O3 has been observed by high-resolution electron microscopy (HRTEM). It was found that perfect 〈112̄0〉 edge dislocations, which are introduced to compensate the misorientation, dissociated into two mixed partial dislocations with {112̄0} stacking-fault in between. The distances between the two partials were estimated by the force balances between repulsive forces of periodical dislocations and attractive forces from stacking-fault. The stacking-fault energy for 10° low-angle tilt grain boundary was estimated to be much higher than the previously reported value.

Original languageEnglish
Title of host publicationRecrystallization and Grain Growth III - Proceedings of the Third International Conference on Recrystallization and Grain Growth, ReX and GG III
PublisherTrans Tech Publications Ltd
Pages979-982
Number of pages4
EditionPART 2
ISBN (Print)087849443X, 9780878494439
DOIs
Publication statusPublished - 2007 Jan 1
Externally publishedYes
Event3rd International Conference on Recrystallization and Grain Growth, ReX GG III - Jeju Island, Korea, Republic of
Duration: 2007 Jun 102007 Jun 15

Publication series

NameMaterials Science Forum
NumberPART 2
Volume558-559
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other3rd International Conference on Recrystallization and Grain Growth, ReX GG III
Country/TerritoryKorea, Republic of
CityJeju Island
Period07/6/1007/6/15

Keywords

  • Alumina
  • Bicrystals
  • Dislocation
  • Grain boundary
  • Stacking-fault
  • TEM

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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