Paper Title:
Distribution of Dislocations in Nanostructured Bainite
  Abstract

The dislocation density in ferrite and austenite of a bainitic microstructure obtained by transformation at very low temperature (300 °C) has been determined using transmission electron microscopy. Observations revealed that bainitic ferrite plates consist of two distinctive regions with different substructures. A central region in the ferrite plate is observed with dislocations that may result from lattice-invariant deformation at the earlier stage of bainite growth. As plastic deformation occurs in the surrounding austenite to accommodate the transformation strain as growth progresses, the Ferrite/Austenite interface has also a very distinctive dislocation profile. In addition, atom-probe tomography suggested that dislocation tangles observed in the vicinity of the ferrite/austenite interface might trap higher amount of carbon than single dislocations inside the bainitic ferrite plate.

  Info
Periodical
Solid State Phenomena (Volumes 172-174)
Edited by
Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson
Pages
117-122
DOI
10.4028/www.scientific.net/SSP.172-174.117
Citation
J. Cornide, G. Miyamoto, F. G. Caballero, T. Furuhara, M. K. Miller, C. García-Mateo, "Distribution of Dislocations in Nanostructured Bainite", Solid State Phenomena, Vols. 172-174, pp. 117-122, 2011
Online since
June 2011
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Price
$32.00
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