In situ nanobeam electron diffraction strain mapping of planar slip in stainless steel. (15th March 2018)

• Record Type: Journal Article
• Authors: Pekin, Thomas C.; Gammer, Christoph; Ciston, Jim; Ophus, Colin; Minor, Andrew M.
• Is Part Of: Scripta materialia. Number 146(2018)
• Page Start: 87
• Page End: 90
• Publication Date: 2018-03-15
• Subjects: Nanobeam electron diffraction -- Strain measurement -- Scanning/transmission electron microscopy -- Planar slip; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2017.11.005
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Nanobeam electron diffraction strain mapping has been used to measure the strain evolution in stainless steel under in situ deformation. As the amount of deformation increases, the leading dislocation of a planar slip band leaves behind a residual strain in the form of a small lattice expansion. Dislocation analysis confirmed that the dislocations involved were <011 > type. While the characteristic residual strain of planar slip has often been observed, it has never before been directly measured. Our results provide a view into the dynamic mechanisms of planar slip, and showcase the possibilities of multidimensional in situ imaging. Graphical Abstract: