Journal article
4D microstructural evolution in a heavily deformed ferritic alloy: a new perspective in recrystallisation studies
We present a multiscale study on the recovery and recrystallisation of a heavily deformed (85% reduction in size) Fe–Si–Sn alloy using a combination of dark field X-ray microscopy (DFXM), synchrotron X-ray diffraction (SXRD) and electron backscatter diffraction (EBSD). By utilizing DFXM, we focus on a grain within the high stored energy (HSE) regions, and track it through consecutive isothermal annealing steps.
The intra-granular structure of the as-deformed grain reveals deformation bands separated by ≈3–5° misorientation. During the early stages of annealing, cells with 2–5° misorientation form while new nuclei appear. The recrystallized grains nucleate near prior grain boundaries, having a typical internal angular spread of <0.05°.
The SXRD results suggest no significant macroscopic texture change after annealing for 1400s at 610 °C in the HSE regions. All results indicate that higher misorientation zones such as grain boundaries or junction points of deformation bands are preferential nucleation regions.
Language: | English |
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Year: | 2022 |
Pages: | 114689 |
ISSN: | 13596462 and 18728456 |
Types: | Journal article |
DOI: | 10.1016/j.scriptamat.2022.114689 |
ORCIDs: | Kutsal, M. and Poulsen, H. F. |