Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1500538 | Scripta Materialia | 2010 | 4 Pages |
Abstract
Three-dimensional dislocation dynamics simulations were employed to examine how hard coatings affect plastic deformation in micron- and submicron-sized, single-crystal pillars (“micropillars”) of nickel. Cross-slip of dislocations in the coated samples was found to be necessary for the formation of banded structures and subcells. Our simulations thus offer an explanation for both the significant increases in compressive strength and the higher strain-hardening rate as well as formation of banded structures in coated micropillars.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Caizhi Zhou, S. Biner, Richard LeSar,