Dislocation Multiplications in Extremely Small Hexagonal-structured Titanium Nanopillars скачать в хорошем качестве

Dislocation Multiplications in Extremely Small Hexagonal-structured Titanium Nanopillars

Dislocation Multiplications in Extremely Small Hexagonal-structured Titanium Nanopillars Without Dislocation Starvation. Peng Huang and Qian Yu (2017), Scientific Reports https://doi.org/10.1038/s41598-017-16... “Smaller is stronger” has been commonly observed in cubic structured and hexagonal close-packed (HCP) structured materials. Dislocation starvation phenomenon is highly responsible for the increase of strength at smaller scale in cubic materials. However, by using quantitative in situ transmission electron microscope (TEM) nano-mechanical testing on cylindrical titanium nano-pillars with diameters of ~150 nm but varied orientations and three dimensional dislocation tomography, we found that dislocation nucleation and multiplication dominate the plastic deformation of the nano-pillars with no sign of dislocation starvation, resulting in much better ability of dislocation storage and plastic stability of HCP structured materials at extremely small scale. Good channel:    / dlium   Subscribe, like and comment. Good website: https://www.dlium.com Bookmark, subscribe and comment.