Comment: On the nature of “unconventional twins” in magnesium

F. X. Lin, C. C. Wu, X. Y. Fang, H. Liu, J. F. Nie

Research output: Contribution to journalLetterOtherpeer-review


“Unconventional twins” were reported by Cayron and Logé [1] to form in plastically deformed magnesium. They were used to show the occurrence of a new twinning mode which was used to argue for reconsidering the theory of deformation twinning that is based on simple shear [1], and to support a concept of axial weak twins [2]. Our paper demonstrates the incorrect interpretation of their electron back-scatter diffraction map in [1], and that the so-called “unconventional” twins are just conventional extension twins that have impinged with each other. Therefore, the so-called habit plane of the “unconventional twins” is a boundary resulting from impingement of these two different variants of the extension twin, and is therefore not expected to be invariant.

Original languageEnglish
Article number115137
Number of pages4
JournalScripta Materialia
Publication statusPublished - Feb 2023


  • Twin
  • Magnesium
  • EBSD

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