Transformation mechanism of α′-martensite in an austenitic Fe–Mn–C–N alloy

The strain-induced transformation from austenite (fcc) into α′-martensite (bcc) in an Fe–18Mn–0.25C–0.084N austenitic alloy has been studied through transmission electron microscopy. It was found that α′-martensite nucleated in the intersection of two ε-martensite laths. Detailed observations of the...

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Bibliographic Details
Published in:Scripta materialia 2007-09, Vol.57 (5), p.385-388
Main Authors: Bracke, L., Kestens, L., Penning, J.
Format: Article
Language:English
Subjects:
Austenite
Deformation induced martensite
Olson–Cohen model
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Summary:The strain-induced transformation from austenite (fcc) into α′-martensite (bcc) in an Fe–18Mn–0.25C–0.084N austenitic alloy has been studied through transmission electron microscopy. It was found that α′-martensite nucleated in the intersection of two ε-martensite laths. Detailed observations of the crystal structures in this zone allowed the incorporation of the relaxation of the transformation strains by the introduction of retransformation partial dislocations.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2007.05.003