Experimental Quantification of Resolved Shear Stresses for Dislocation Motion in TiN.
basic_science · Level V
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- Record sourced from PubMed, PMID 26065576.
- Also identified by DOI 10.1021/acs.nanolett.5b00791.
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Abstract
Experimental quantification of the critical resolved shear stress (CRSS) at the level of unit dislocation glide is still a challenge. By using in situ nanoindentation in a high-resolution transmission electron microscope and strain analysis of the acquired structural images, the CRSS for the motion of individual dislocations on {110}⟨011⟩ slip system and glide dislocation re-emission from a tilt grain boundary in TiN are quantified. This work offers an approach to measure the local stresses associated with dislocation motion in high-strength materials.