Paper Title:
Factors Limiting the Achievable Ferrite Grain Refinement in Hot Worked Microalloyed Steels
  Abstract

Nb is added to C-Mn steels in order to use the solute drag and/or strain induced precipitation as a useful tool to condition the austenite in the hot rolling mill and produce during the subsequent cooling a refined ferrite grain size. The highest degree of refinement is obtained in conventional rolling mills by accumulating the deformation in austenite during the last passes, followed by early cooling in the run out table to produce a high density of nucleated ferrite grains. However, the maximum refinement is to a certain extent attenuated due to the ferrite grain coarsening taking place during the transformation. The present work analyses the different aspects limiting the final achievable ferrite grain refinement.

  Info
Periodical
Materials Science Forum (Volumes 500-501)
Edited by
J.M. Rodriguez-Ibabe, I. Gutiérrez, B. López and A. Iza-Mendia
Pages
355-362
DOI
10.4028/www.scientific.net/MSF.500-501.355
Citation
E. Novillo, E. Cotrina, A. Iza-Mendia, B. López, I. Gutiérrez, "Factors Limiting the Achievable Ferrite Grain Refinement in Hot Worked Microalloyed Steels ", Materials Science Forum, Vols. 500-501, pp. 355-362, 2005
Online since
November 2005
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Price
$32.00
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