Mechanical response of mesoscopic aluminum rings under uniaxial compression

Document Type

Article

Publication Date

9-1-2018

Abstract

The strength of materials exhibits size effects at sample dimensions <1 mm. In the literature, two trends are identified in the length scale spectrum: smaller is stronger at <10 m; larger is stronger at >500 m. The dimension at which the transition between these two trends occurs remained unclear. We study this mesoscopic scale (20-400 m) by examining the compression response of ring and pillar-shaped Al specimens. Integrating present results with literature data, we provide Al's compression response in a master curve fashion. We demonstrate the inadequacies of the classical surface layer model, and suggest directions for future studies.

Publication Source (Journal or Book title)

MRS Communications

First Page

1254

Last Page

1260

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