Abstract
The athermal effect of electric current during electrically assisted (EA) annealing, which is a simple and cost-effective heat treatment technique, is assessed by comparing the performances of EA annealing and induction heat treatment (IHT), using aluminum alloy specimens with a high dislocation density from cold rolling. The dislocation densities after EA annealing and IHT are calculated using X-ray diffraction data to compare the performance of the processes. The performance of EA annealing clearly surpasses that of IHT in a certain temperature range. However, at higher temperatures, the thermal effect alone is able to induce nearly complete annihilation of dislocation density, thus, the practical advantage of EA annealing may diminish.
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Acknowledgements
This work was supported by the National Research Foundation of Korea (NRF) Grants funded by the Korean government (MSIT) (2019R1A2C2009939; 2020R1A5A6017701). H. Choi has been supported by POSCO Science Fellowship of POSCO TJ Park Foundation. The Institute of Engineering Research at Seoul National University also provided research facilities for this work.
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Nguyen, T.A.N., Choi, H., Kim, MJ. et al. Evaluation of Efficiency of Electrically Assisted Rapid Annealing Compared to Rapid Induction Heat Treatment. Int. J. of Precis. Eng. and Manuf.-Green Tech. 9, 485–492 (2022). https://doi.org/10.1007/s40684-021-00382-z
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DOI: https://doi.org/10.1007/s40684-021-00382-z