%0 Journal Article %T The ductile to brittle transition of ultrafine-grained Armco iron: an experimental study %A Hohenwarter, A. %A Kammerhofer, C. %A Pippan, R. %J Journal of Materials Science %V 45 %N 17 %P 4805-4812 %@ 0022-2461 %D 2010-06-04 %I Springer US %~ DeepDyve