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Strengthening from Nb-rich clusters in a Nb-microalloyed steel
- Source :
-
Scripta Materialia . May2012, Vol. 66 Issue 9, p710-713. 4p. - Publication Year :
- 2012
-
Abstract
- We demonstrate that a Nb-microalloyed ultra-thin cast strip steel can be strengthened substantially without compromising ductility by performing a simple heat treatment at 700°C for 4min. The strengthening was attributed to a fine dispersion of Nb-rich solute atom clusters. These clusters had an average size of ∼60 atoms at peak hardness and resembled Guinier–Preston zones in Al–Cu alloys. The application of the Ashby–Orowan equation indicates that these clusters are potent strengthening agents when compared to conventional Nb(C,N) precipitation strengthening. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13596462
- Volume :
- 66
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Scripta Materialia
- Publication Type :
- Academic Journal
- Accession number :
- 73528867
- Full Text :
- https://doi.org/10.1016/j.scriptamat.2012.01.029