caa a22 4500 463230949 CHVBK 20180405153241.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10853-006-0670-y doi (NATIONALLICENCE)springer-10.1007/s10853-006-0670-y Grain size dependence of strength of nanocrystalline materials as exemplified by copper: an elastic-viscoplastic modelling approach [Elektronische Daten] [S. Mercier, A. Molinari, Y. Estrin] The purpose of this work is to model the mechanical behavior of nanocrystalline materials. Based on previous rigid viscoplastic models proposed by Kim etal. (Acta Mater, 48: 493, 2000) and Kim and Estrin (Acta Mater, 53: 765, 2005), the nanocrystalline material is described as a two phase composite material. Using the Taylor-Lin homogenisation scheme in order to account for elasticity, the yield stress of nanocrystalline materials can be evaluated. The transition from a Hall-Petch relation to an inverse Hall-Petch relation is defined and is related to a change in plastic deformation mode in the crystallite phase from a dislocation glide driven mechanism to a diffusion-controlled process. Springer Science+Business Media, LLC, 2006 Mercier S. Laboratory of Physics and Mechanics of Materials, UMR CNRS 7554, Université Paul Verlaine-Metz, Ile du Saulcy, 57045, Metz, France aut Molinari A. Laboratory of Physics and Mechanics of Materials, UMR CNRS 7554, Université Paul Verlaine-Metz, Ile du Saulcy, 57045, Metz, France aut Estrin Y. Institute of Materials Science and Technology, Clausthal University of Technology, Agricolastr. 6, 38678, Clausthal-Zellerfeld, Germany aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1455-1465 0022-2461 42:5<1455 2007 42 10853 https://doi.org/10.1007/s10853-006-0670-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0670-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mercier S. Laboratory of Physics and Mechanics of Materials, UMR CNRS 7554, Université Paul Verlaine-Metz, Ile du Saulcy, 57045, Metz, France aut NATIONALLICENCE 700 1- Molinari A. Laboratory of Physics and Mechanics of Materials, UMR CNRS 7554, Université Paul Verlaine-Metz, Ile du Saulcy, 57045, Metz, France aut NATIONALLICENCE 700 1- Estrin Y. Institute of Materials Science and Technology, Clausthal University of Technology, Agricolastr. 6, 38678, Clausthal-Zellerfeld, Germany aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1455-1465 0022-2461 42:5<1455 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer