EBSD Characterization of Pure Iron Deformed by ECAE

Reny Angela  Renzetti; M.J.R. Sandim; Hugo Ricardo Zschommler Sandim; K.T. Hartwig; Heide H. Bernardi; Dierk Raabe

doi:10.4028/www.scientific.net/MSF.638-642.1995

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HomeMaterials Science ForumMaterials Science Forum Vols. 638-642EBSD Characterization of Pure Iron Deformed by...

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.

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Materials Science Forum (Volumes 638-642)

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1995-2000

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.638-642.1995

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January 2010

Authors:

Reny Angela Renzetti, M.J.R. Sandim, Hugo Ricardo Zschommler Sandim, K.T. Hartwig, Heide H. Bernardi, Dierk Raabe

Keywords:

Boundary Distribution, ECAE, Electron Backscatter Diffraction (EBSD), Iron, Recrystallization

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