4d Microstructural Evolution in a Heavily Deformed Ferritic Alloy: A New Perspective Inrecrystallization Studies

• DOI: 10.2139/ssrn.4019916
• Publication Date: 2022-01-29T13:17:29Z
• Authors: Can Yildrim; Nikolas Mavrikakis; Philip Cook; Raquel Rodriguez-...; Mustafacan Kutsal; Henning Poulsen; Carsten Detlefs
• Keywords: 02 engineering and technology; 0210 nano-technology

We present a multiscale study on the recovery and recrystallization of Fe-Si-Sn alloys using combination dark field X-ray microscopy (DFXM), synchrotron diffraction (SXRD) electron backscatter (EBSD). A grain interest embedded in 200-micron thick, heavily deformed (85% reduction size) sample is studied DFXM at consecutive isothermal annealing steps. The intra-granular structure as-deformed reveals deformation bands separated by 3–5◦ misorientation. During early stages annealing, cells with 2–5◦ misorientation form while new nuclei appear. recrystallized grains nucleate prior boundaries, between parent adjacent grains, having typical internal angular spread <0.05◦. SXRD results indicate no significant macroscopic texture change after for 1400s above temperature. SRDX are compared EBSD. discuss selection growth mechanisms grains.