Strengthening mechanisms of iron micropillars

Author: Rogne B.R.S.   Thaulow C.  

Publisher: Taylor & Francis Ltd

E-ISSN: 1478-6443|95|16-18|1814-1828

ISSN: 1478-6443

Source: Philosophical Magazine, Vol.95, Iss.16-18, 2015-06, pp. : 1814-1828

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Abstract

We examine the size effect and strengthening mechanisms of bcc iron pillars. The single-crystal pillars were machined with focused ion beam and tested with a nanoindentation device with the compression axis along the crystallographic direction. We compare our test results with both older literature on whiskers and micro/macro specimens, and recent results from atomistic modelling. We find that the obtained results can be explained on the basis of current theories based on small-scale plasticity.