Formation of nanolaminated structure in an interstitial-free steel

Formation of nanolaminated structure in an interstitial-free steel

Nanolaminated (NL) structure has been produced in an interstitial-free steel by means of surface mechanical grinding treatment. The NL structure is characterized by an average lamella thickness of ∼20nm and also exhibits a strong deformation texture. Various dislocation substructures and individual...

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Veröffentlicht in:Scripta materialia 2015, Vol.95, p.54-57
Hauptverfasser: Liu, X.C., Zhang, H.W., Lu, K.
Format: Artikel
Sprache:eng
Schlagworte:
Dislocations
Grain refinement
Hardness
Interstitial-free steel
Nanolaminated structure
Nanostructure
Plastic deformation
Structural steels
Substructures
Surface layer
Surface mechanical grinding treatment
Texture
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Zusammenfassung:Nanolaminated (NL) structure has been produced in an interstitial-free steel by means of surface mechanical grinding treatment. The NL structure is characterized by an average lamella thickness of ∼20nm and also exhibits a strong deformation texture. Various dislocation substructures and individual dislocations exist inside these lamellae from submicron size to a few nanometers. Due to this extraordinary grain refinement, the NL structure exhibits a record hardness of 5.3±0.6GPa.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2014.10.003