title: Increasing the strength of nanocrystalline steels by annealing: Is segregation necessary?
abstract: Hardening phenomena in nanocrystalline metals after annealing have been widely reported, and the subject of much recent debate. Solute segregation to grain boundaries and dislocation source hardening have been proposed to cause the strengthening. To shed light on the dominant mechanisms, we present results from mechanical experiments and atom probe tomography on samples with similar grain size but different amounts of solute segregation and different boundary chemistries.
authors.affiliation: Erich-Schmid-Institute of Materials Science, Jahnstrasse 12, 8700 Leoben, Austria.
authors.forename: O
authors.initials: O
authors.lastname: Renk
authors.affiliation: Department of Materials Physics, Montanuniversität Leoben, Jahnstrasse 12, 8700 Leoben, Austria.
authors.forename: A
authors.initials: A
authors.lastname: Hohenwarter
authors.affiliation: Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW 2006, Australia.
authors.forename: K
authors.initials: K
authors.lastname: Eder
authors.affiliation: Erich-Schmid-Institute of Materials Science, Jahnstrasse 12, 8700 Leoben, Austria.
authors.forename: K S
authors.initials: KS
authors.lastname: Kormout
authors.affiliation: Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW 2006, Australia.
authors.forename: J M
authors.initials: JM
authors.lastname: Cairney
authors.affiliation: Erich-Schmid-Institute of Materials Science, Jahnstrasse 12, 8700 Leoben, Austria.
authors.forename: R
authors.initials: R
authors.lastname: Pippan
keywords: Annealing; Atom probe tomography; Hardening; Nanocrystalline 316L; Segregation