Paper Title:
In Situ High Temperature X-Ray Studies on Bainitic Transformation of Austempered Silicon Alloyed Steels
  Abstract

The in-situ X-ray diffraction observations of the bainitic transformation of silicon alloyed steels were performed using the high temperature X-ray diffraction technique. The experimental results have shown that the volume fraction and carbon content of austenite remains a constant value which indicate that the transformation is almost finished after the early stages of austempering transformation. Asymmetry diffraction peaks are obtained for samples at the early stage of transformation due to a heterogeneous distribution of carbon in different regions of austenite and thus exists two types of austenite: low-carbon austenite (γLC) and the high-carbon austenite (γHC). The experimental results supports that the bainite growth is by a non-diffusive mechanism when austempering temperature is in the lower bainite transformation temperature.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
3086-3092
DOI
10.4028/www.scientific.net/MSF.638-642.3086
Citation
E. Vuorinen, X. Chen, "In Situ High Temperature X-Ray Studies on Bainitic Transformation of Austempered Silicon Alloyed Steels", Materials Science Forum, Vols. 638-642, pp. 3086-3092, 2010
Online since
January 2010
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