Fig. 3: Specialized characterization of microstructure based on DIC.
From: Cryogenic spatiotemporal characteristics and microevolution of 316LN discontinuous plastic flow
a Frontal image of the fractured specimen, full-field εyy strain image of the fractured sample measured by DIC, and the locations of the sampling 1 and sampling 2 points in the specimen. Residual traces of previously formed slip bands are clearly observed on the specimen surface. The slip bands traverse the entire specimen at an angle of ~60°, with a width of 1 mm. EBSD micrographs of deformation microstructures for sampling 1 and sampling 2, and the magnified images in the white rectangle. b IPF maps of sampling 1. c IPF map of sampling 2. d IPF map of sampling 2 of Grain 1. e BC maps of sampling 1. f BC maps of sampling 2. g BC maps of Grain 1. h Grain orientation transformation during the occurrence of slip bands. i ODFs identified in the sampling 1 and sampling 2: (i1) (i2) γ-austenite, φ2 = 90°. (i3) (i4) α′-martensite, φ2 = 90°. j TKD and TEM at Grain 1: (j1) BC map. (j2) (j3) (j4) Images of the boundaries of α′-martensite and γ-austenite. (j5) FFT pattern of (j4).
