Paper Title:
Study of the Plastic Deformation in Nanocrystalline and Ultrafine Iron and Carbon Steels
  Abstract

Samples of nanostructured and ultrafine grained steels with carbon content ranging from 0.05 to 0.55%wt. have been obtained by a warm consolidation process from mechanically milled powders and subsequent heat treatments. In general, homogeneous grain size distributions were obtained except for the low-carbon steel in which a bimodal grain size distribution was observed when it was heat treated at high temperatures. The stress-strain response has been studied by means of compression tests. Nanostructured materials showed high strength but poor results in terms of ductility. In the low-ultrafine range (mean grain size between 100-500 nm) the three materials showed an increase in the ductility with strain softening. Finally, when the average grain size was close to 1 µm samples showed larger ductility and strain hardening.

  Info
Periodical
Materials Science Forum (Volumes 584-586)
Edited by
Yuri Estrin and Hans Jürgen Maier
Pages
617-622
DOI
10.4028/www.scientific.net/MSF.584-586.617
Citation
J. A. Benito, R. Tejedor, R. Rodríguez-Baracaldo, J. M. Cabrera, J. M. Prado, "Study of the Plastic Deformation in Nanocrystalline and Ultrafine Iron and Carbon Steels", Materials Science Forum, Vols. 584-586, pp. 617-622, 2008
Online since
June 2008
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$32.00
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