The effect of {1012} twin boundary on the evolution of defect substructure

F. Wang, C. D. Barrett, K. Hazeli, K. D. Molodov, T. Al-Samman, A. Oppedal, D. A. Molodov, A. Kontsos, K. T. Ramesh, H. El Kadiri, S. R. Agnew

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


Pure Mg single crystals were deformed at room temperature along two orientations in sequence, in order to activate a specific dislocation slip mode followed by {1012} twinning. The defects in both the matrix and twin crystals were analyzed with a transmission electron microscope (TEM). This study reveals the collective evolution of the defect substructure when a dislocated crystal is “invaded” by a moving twin boundary. When primarily [c]-containing defects in the matrix were incorporated by a moving twin boundary, including 〈c+a〉, pure [c] dislocations and I1 stacking faults, the twin contains homogeneously distributed I1 stacking faults, which in some instances appear to be connected on twin boundary to the faults in the matrix.

Original languageEnglish (US)
Title of host publicationMagnesium Technology 2017
EditorsNeale R. Neelameggham, Alok Singh, Kiran N. Solanki, Dmytro Orlov
PublisherSpringer International Publishing
Number of pages6
ISBN (Print)9783319523910
StatePublished - 2017
Externally publishedYes
EventInternational Symposium on Magnesium Technology, 2017 - San Diego, United States
Duration: Feb 26 2017Mar 2 2017

Publication series

NameMinerals, Metals and Materials Series
VolumePart F8
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696


ConferenceInternational Symposium on Magnesium Technology, 2017
Country/TerritoryUnited States
CitySan Diego


  • Hexagonal
  • Magnesium
  • Single crystal
  • TEM
  • Twin boundary

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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