Dynamic Restoration Mechanism of a Fe3Al Based Alloy During Elevated Temperature Deformation View Full Text


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Article Info

DATE

1994

AUTHORS

Mingwei Chen, Aidang Shan, Dongliang Lin

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 Fe 3 Al 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. More... »

PAGES

255

References to SciGraph publications

  • 1979-09. Deformation characteristics of an Al−6Cu−O. 4Zr superplastic alloy in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • Identifiers

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    http://scigraph.springernature.com/pub.10.1557/proc-364-255

    DOI

    http://dx.doi.org/10.1557/proc-364-255

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