Dynamic restoration mechanism of a Fe3Al based alloy during elevated temperature deformation

Mingwei Chen, Aidang Shan, Dongliang Lin

    Research output: Contribution to journalConference article

    Abstract

    By TEM and metallographic examination, we found that dynamic recovery and following continuous recrystallization, which connects with the elevated temperature ductility, takes place in a Fe3Al based alloy during elevated temperature deformation. Dynamic restoration consists of the following process: (1) by climbing or cross-slipping glide dislocations change into dislocation arrays, (2) the dislocation array attracts lattice dislocations, (3) with increasing dislocation density, a non-equilibrium subboundary forms, which is easy to migrate, slide or rotate under external force, and (4) when the misorientation angle of the subboundary increases to a critical value, the subboundary changes into a grain boundary with continuous misfit. By relaxation, the boundary then changes into a grain boundary consisting of periodical structure units.

    Original languageEnglish
    Pages (from-to)255-259
    Number of pages5
    JournalMaterials Research Society Symposium - Proceedings
    Volume364
    Issue number1
    Publication statusPublished - 1995 Jan 1
    EventProceedings of the 1994 MRS Fall Meeting - Boston, MA, USA
    Duration: 1994 Nov 281994 Nov 30

    ASJC Scopus subject areas

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

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