Browsing by Author "Ocenásek, Jan"
Now showing items 1-5 of 5
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Extracting uniaxial responses of single crystals from sharp and spherical hardness measurements
(2015-05-01)
Article
Open AccessThis investigation provides a mechanistic background to mechanical property extractions performed from single-crystal microhardness measurements. The analysis concerns both spherical and sharp (pyramidal) indentations. We ... -
Statistics of dislocation avalanches in FCC and BCC metals: dislocation mechanisms and mean swept distances across microsample sizes and temperatures
(Nature, 2020-12-01)
Article
Open AccessPlastic deformation in crystalline materials consists of an ensemble of collective dislocation glide processes, which lead to strain burst emissions in micro-scale samples. To unravel the combined role of crystalline ... -
Strain hardening and dislocation avalanches in micrometer-sized dimensions
(2015-06-01)
Article
Open AccessPresent experiments and computational simulations furnish a fundamental background to the understanding of plastic flow across sample sizes. It is shown that self-organized criticality (SOC) governs the size distribution ... -
Understanding imprint formation, plastic instabilities and hardness evolutions in FCC, BCC and HCP metal surfaces
(2021-09)
Article
Open AccessNanoindentation experiments in metal surfaces are characterized by the onset of plastic instabilities along with the development of permanent nanoimprints and dense defect networks. This investigation concerns massive ... -
Unraveling deformation mechanisms around FCC and BCC nanocontacts through slip trace and pileup topography analyses
(2017-02-15)
Article
Open AccessNanocontact loadings offer the potential to investigate crystal plasticity from surface slip trace emissions and distinct pileup patterns where individual atomic terraces arrange into hillocks and symmetric rosettes. Our ...
