Paper Title:
Modelling Strain Induced Precipitation of Niobium Carbonitride during Multipass Deformation of Austenite
  Abstract

A new model of strain induced precipitation in niobium microalloyed austenite is proposed. This is based on the experimental observation of formation of microbands during hot deformation of iron – 30% nickel, which remains austenitic to room temperature. Precipitates are preferentially nucleated on nodes in the dislocation network in the microbands. This geometry enables features of earlier models to be simply explained, and facilitates extension of the model to multipass deformation. It is shown that the model captures all the essential features of previous experimental observations on microalloyed C – Mn steels. Currently, sensitivity analysis of the model and systematic experimental work are being undertaken to quantitatively validate the model.

  Info
Periodical
Materials Science Forum (Volumes 500-501)
Edited by
J.M. Rodriguez-Ibabe, I. Gutiérrez, B. López and A. Iza-Mendia
Pages
3-14
DOI
10.4028/www.scientific.net/MSF.500-501.3
Citation
C.M. Sellars, E. J. Palmiere, "Modelling Strain Induced Precipitation of Niobium Carbonitride during Multipass Deformation of Austenite ", Materials Science Forum, Vols. 500-501, pp. 3-14, 2005
Online since
November 2005
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Price
$32.00
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