Crystal size effect in two dimensions – Influence of size and shape. (June 2015)

• Record Type: Journal Article
• Authors: Maaß, R.; Volkert, C.A.; Derlet, P.M.
• Is Part Of: Scripta materialia. Volume 102(2015)
• Page Start: 27
• Page End: 30
• Publication Date: 2015-06
• Subjects: Size effect -- Plasticity -- Single crystals -- Stress scaling; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2015.02.006
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : Based on the statistics of both the stress and strain of a plastic event, the well known size-effect in strength can be linked to a crystal's critical stress distribution and the universal scaling exponent of intermittent plasticity. We successfully test these hypotheses with small-scale deformation experiments as a function of diameter and aspect ratio, and find that the latter affects the material's strength in a way that gives direct insight into the underlying critical stress distribution of the deforming volume.