Tension/compression strength asymmetry in a simulated nanocrystalline metal

TitleTension/compression strength asymmetry in a simulated nanocrystalline metal
Publication TypeJournal Article
Year of Publication2004
AuthorsLund, AC, Nieh, TG, Schuh, CA
JournalPhysical Review B
Volume69
Issue1
Date Published2004/01//
Abstract

We explore asymmetries in the plastic deformation of idealized nanocrystalline nickel through static molecular simulations. We find that both the yield and flow stresses of these materials are higher in compression than in tension. This result is discussed in the context of earlier work on metallic glasses, and it is suggested that very similar atomic-level mechanisms control yield in both of these materials classes.