Transformation of Deformed Austenite at Temperatures above the Ae3

John J. Jonas; Vladimir V. Basabe; Chiradeep Ghosh

doi:10.4028/www.scientific.net/MSF.706-709.49

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HomeMaterials Science ForumMaterials Science Forum Vols. 706-709Transformation of Deformed Austenite at...

Transformation of Deformed Austenite at Temperatures above the Ae₃

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.

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Periodical:

Materials Science Forum (Volumes 706-709)

Pages:

49-54

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.706-709.49

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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

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