Abstract
In the present work, the microstructural evolution in heavily cold-rolled and annealed Fe-6.8Al low-density steel has been studied. The evolution of texture with a strong component \(\left\{ {001} \right\}\langle 110\rangle\) has been observed upon cold rolling. After recrystallisation, the formation of texture with \(\left\{ {111} \right\}110\) component and other γ fiber orientations with weak intensities have been noticed. The mechanism of recrystallisation is discontinuous recrystallisation. The evolution of texture with near \(\left( {04\overline{1}} \right)\left[ {501} \right]\) and \(\left( {31\overline{8}} \right)\left[ {\overline{4}\overline{3}\overline{2}} \right]\) components in the partially recrystallised microstructures have been observed. The recrystallised grains nucleate close to the boundaries of the deformed grains and are bounded by high angle grain boundaries which are easily identified from the image quality maps. Analysis of grain size of the annealed samples shows that the presence of Al reduces the grain boundary mobility by solute drag.
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Acknowledgments
The authors acknowledge the DST-FST grant for the SEM facility at the Institute of Nano-Science Initiative, Indian Institute of Science which has been used in the study. The use of XRD at the Institute x-ray facility is also acknowledged. The authors are thankful to Mr Sashidhara for his help in carrying out the tensile tests on the Instron machine.
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Pramanik, S., Suwas, S. Microstructure and Crystallographic Texture Evolution during Isothermal Annealing of Cold-Rolled Fe-6.8Al Low-Density Steel. J. of Materi Eng and Perform 31, 7449–7460 (2022). https://doi.org/10.1007/s11665-022-06792-7
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DOI: https://doi.org/10.1007/s11665-022-06792-7