An Investigation Into 6-Fold Symmetry in Martensitic Steels

Austenite grains that have undergone a martensitic transformation are typically composed of 24 variants that can be categorized by their Bain axis of transformation. There are 3 〈001〉 axes for Bain transformations, therefore the (001) pole figure of a prior austenite grain displays 3-fold symmetry....

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Bibliographic Details
Published in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2016-11, Vol.47 (11), p.5266-5270
Main Authors: Kinney, Christopher, Pytlewski, Ken, Qi, Liang, Khachaturyan, Armen G., Morris, J. W.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Communication
Crystallography
Materials Science
Metallic Materials
Nanotechnology
Steel
Structural Materials
Surfaces and Interfaces
Thin Films
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Summary:Austenite grains that have undergone a martensitic transformation are typically composed of 24 variants that can be categorized by their Bain axis of transformation. There are 3 〈001〉 axes for Bain transformations, therefore the (001) pole figure of a prior austenite grain displays 3-fold symmetry. However, we observed superficially similar prior austenite grains containing 6-fold symmetry in the (001) pole figure. This paper introduces evidence of this 6-fold symmetry and explores the crystallographic origins.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-016-3710-5