Structure of Widmanstatten crystals of ferrite and cementite

Structural analysis of Widmanstatten crystals in У8, 10, and 5Л carbon steel shows that Widmanstatten ferrite is first deposited at the austenite grain boundaries in cast 50Л steel. The intervals are filled with polyhedral ferrite. The plates of Widmanstatten ferrite and cementite are laminar in str...

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Bibliographic Details
Published in:Steel in translation 2008-08, Vol.38 (8), p.684-687
Main Authors: Bataev, I. A., Bataev, A. A., Burov, V. G., Lizunkova, Ya. S., Zakharevich, E. E.
Format: Article
Language:English
Subjects:
Cementite
Chemistry and Materials Science
Crystal structure
Ferrite
Grain boundaries
Laminar
Materials Science
Plates
Structural steels
Studies
Widmanstatten structure
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Summary:Structural analysis of Widmanstatten crystals in У8, 10, and 5Л carbon steel shows that Widmanstatten ferrite is first deposited at the austenite grain boundaries in cast 50Л steel. The intervals are filled with polyhedral ferrite. The plates of Widmanstatten ferrite and cementite are laminar in structure. The layer thickness is ∼10 3 nm or less. Analysis of the fine structure of the Widmanstatten plates confirms that the layers of plate crystals grow by diffusional migration of steps along their broad boundaries. The laminar structure of the crystals of Widmanstatten ferrite and cementite explains their behavior in plastic deformation of the steel.
ISSN:0967-0912
1935-0988
DOI:10.3103/S0967091208080251