Atomic structure of 66° [1̄10] asymmetric tilt grain boundary in aluminum

M. Shamsuzzoha, Pierre A Deymier, David J. Smith

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

Abstract

A 66° [1̄10] asymmetric tilt grain boundary in Al prepared by cold rolling and annealing has been studied by high-resolution electron microscopy. Due to a 4.5° deviation from the perfect Σ3 misorientation, the boundary is heavily faceted with straight segments running parallel to (1̄1̄1) and (112) planes. All atomic sites across the (1̄1̄1) facets appear to be coincident with the (111) planes at an angle of 66°. The line defects which accommodate the deviation from the perfect twin orientation result in grain boundary stepping. The observed structural features can be described in terms of secondary grain boundary dislocations with Burgers vectors of the type 1/3〈111〉, and 1/6〈112〉 as well as their interactions.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium - Proceedings
PublisherMRS
Pages139-144
Number of pages6
Volume466
StatePublished - 1997
Externally publishedYes
EventProceedings of the 1996 MRS Fall Meeting - Boston, MA, USA
Duration: Dec 3 1996Dec 5 1996

Other

OtherProceedings of the 1996 MRS Fall Meeting
CityBoston, MA, USA
Period12/3/9612/5/96

Fingerprint

Crystal atomic structure
Aluminum
Grain boundaries
Burgers vector
High resolution electron microscopy
Cold rolling
Dislocations (crystals)
Crystal orientation
Annealing
Defects

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Shamsuzzoha, M., Deymier, P. A., & Smith, D. J. (1997). Atomic structure of 66° [1̄10] asymmetric tilt grain boundary in aluminum. In Materials Research Society Symposium - Proceedings (Vol. 466, pp. 139-144). MRS.

Atomic structure of 66° [1̄10] asymmetric tilt grain boundary in aluminum. / Shamsuzzoha, M.; Deymier, Pierre A; Smith, David J.

Materials Research Society Symposium - Proceedings. Vol. 466 MRS, 1997. p. 139-144.

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

Shamsuzzoha, M, Deymier, PA & Smith, DJ 1997, Atomic structure of 66° [1̄10] asymmetric tilt grain boundary in aluminum. in Materials Research Society Symposium - Proceedings. vol. 466, MRS, pp. 139-144, Proceedings of the 1996 MRS Fall Meeting, Boston, MA, USA, 12/3/96.
Shamsuzzoha M, Deymier PA, Smith DJ. Atomic structure of 66° [1̄10] asymmetric tilt grain boundary in aluminum. In Materials Research Society Symposium - Proceedings. Vol. 466. MRS. 1997. p. 139-144
Shamsuzzoha, M. ; Deymier, Pierre A ; Smith, David J. / Atomic structure of 66° [1̄10] asymmetric tilt grain boundary in aluminum. Materials Research Society Symposium - Proceedings. Vol. 466 MRS, 1997. pp. 139-144
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