Skip to Main content Skip to Navigation
Journal articles

Extension of the Derby relation to metals severely deformed to their steady-state ultrafine-grain size

Abstract : It was documented by Derby in 1992 that the flow stress is in power-law relationship with the steady-state grain size obtained in dynamic recrystallization. This relation has been found valid in this paper also for ultrafine-grained metals that can be obtained by severe plastic deformation. For these materials, the exponent is -0.5, which is the Hall-Petch relation. In copper, a uniform dislocation density without geometrically necessary dislocations is valid for this state. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Document type :
Journal articles
Complete list of metadatas

https://hal-emse.ccsd.cnrs.fr/emse-01066966
Contributor : Géraldine Fournier-Moulin <>
Submitted on : Monday, September 22, 2014 - 4:48:27 PM
Last modification on : Wednesday, June 24, 2020 - 4:19:23 PM

Identifiers

Citation

Arnaud Pougis, L.S. Toth, Jean-Jacques Fundenberger, András Borbély. Extension of the Derby relation to metals severely deformed to their steady-state ultrafine-grain size. Scripta Materialia, Elsevier, 2014, 72-73, pp.59-62. ⟨10.1016/j.scriptamat.2013.10.020⟩. ⟨emse-01066966⟩

Share

Metrics

Record views

475