title: Experimental Quantification of Resolved Shear Stresses for Dislocation Motion in TiN.
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.
authors.forename: N
authors.initials: N
authors.lastname: Li
authors.affiliation: §Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.
authors.forename: A
authors.initials: A
authors.lastname: Misra
authors.forename: S
authors.initials: S
authors.lastname: Shao
authors.forename: J
authors.initials: J
authors.lastname: Wang
keywords: In situ HRTEM; TiN; dislocation motion; resolved shear stress; strain mapping