Paper Title:
Transformation of Deformed Austenite at Temperatures above the Ae3
| Periodical | Materials Science Forum (Volumes 706 - 709) |
|---|---|
| Main Theme | THERMEC 2011 |
| Edited by | T. Chandra, M. Ionescu and D. Mantovani |
| Pages | 49-54 |
| DOI | 10.4028/www.scientific.net/MSF.706-709.49 |
| Citation | John J. Jonas et al., 2012, Materials Science Forum, 706-709, 49 |
| Online since | January, 2012 |
| Authors | John J. Jonas, Vladimir V. Basabe, Chiradeep Ghosh |
| Keywords | Austenite Transformation, Cementite, Deformation-Induced Ferrite, Dynamic Transformation, Fe-C Phase Diagrams, Ferrite Formation, Pearlite Formation |
| Price | US$ 28,- |
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Abstract
Recent observations regarding the transformation of deformed austenite are reviewed. It is shown that superequilibrium ferrite and pearlite can be formed at temperatures well above the Ae3 and Ae1, respectively. The role of the stored energy associated with the introduction of the dislocations introduced by the deformation is discussed. It is shown that the forward dynamic transformation into ferrite and pearlite is several orders of magnitude faster than the reverse static transformation back into austenite. The retarding effect of alloying additions such as niobium is also outlined. The results are interpreted in terms of the effect of deformation on the modified phase diagrams pertaining to the transformation of deformed austenite.
