Structure of Widmanstatten crystals of ferrite and cementite
- 1 August 2008
- journal article
- Published by Allerton Press in Steel in Translation
- Vol. 38 (8) , 684-687
- https://doi.org/10.3103/s0967091208080251
Abstract
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.Keywords
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