Paper Title:
Texture and Substructure Development during Post-Dynamic Softening in Ni-30%Fe Austenite
  Abstract

The texture and substructure development during post-dynamic annealing of an austenitic Ni-30%Fe model alloy after complete dynamic recrystallization was investigated using electron back-scattered diffraction (EBSD) and transmission electron microscopy (TEM). A novel mechanism of metadynamic softening is proposed based on the experimental investigation of the grain structure, crystallographic texture and dislocation substructure evolution. The initial softening stage involved rapid growth of the dynamically formed nuclei and migration of the mobile boundaries. The subboundaries within DRX grains progressively disintegrated through dislocation climb and dislocation annihilation, which ultimately led to the formation of dislocation-free grains, while the grain boundary migration gradually became slower. As a result, the DRX texture was largely preserved throughout the annealing process.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
1279-1282
DOI
10.4028/www.scientific.net/MSF.654-656.1279
Citation
H. Beladi, P. Cizek, P. D. Hodgson, "Texture and Substructure Development during Post-Dynamic Softening in Ni-30%Fe Austenite", Materials Science Forum, Vols 654-656, pp. 1279-1282, Jun. 2010
Online since
June 2010
Price
US$ 28,-
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