Paper Title:
EBSD Characterization of Pure Iron Deformed by ECAE
  Abstract

Polycrystalline iron was deformed by eight ECAE passes using the route Bc to a total strain of 9.2. After deformation the material was annealed at temperatures up to 800oC. Scanning electron microscopy (SEM) and high-resolution electron backscatter diffraction (EBSD) were used to characterize both deformed and annealed structures. In the as-deformed state, the mean grain size is 650 nm and the volume fraction of high angle boundaries (VHAB) is 56%. Upon annealing there is a pronounced softening above 300oC. At the beginning of recrystallization, at about 400oC, the VHAB increases to 71%. The results indicate that discontinuous recrystallization is the main softening mechanism in severely deformed iron.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
1995-2000
DOI
10.4028/www.scientific.net/MSF.638-642.1995
Citation
R. A. Renzetti, M.J.R. Sandim, H. R. Z. Sandim, K.T. Hartwig, H. H. Bernardi, D. Raabe, "EBSD Characterization of Pure Iron Deformed by ECAE", Materials Science Forum, Vols. 638-642, pp. 1995-2000, 2010
Online since
January 2010
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