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Title: Significant efficiency improvement of conventional tempering by a novel flash tempering technique
Authors: Ding, Chao
Niu, Gang
Wang, Enmao
Liu, Jinxu
Gong, Na
Liu, Hongfei
Wang, Yong
Yu, Xinpan
Wang, Xuelin
Shang, Chengjia
Wu, Huibin
Keywords: Engineering::Materials
Issue Date: 2023
Source: Ding, C., Niu, G., Wang, E., Liu, J., Gong, N., Liu, H., Wang, Y., Yu, X., Wang, X., Shang, C. & Wu, H. (2023). Significant efficiency improvement of conventional tempering by a novel flash tempering technique. Journal of Materials Research and Technology, 25, 3551-3560.
Journal: Journal of Materials Research and Technology 
Abstract: A flash tempering process has been demonstrated for low-carbon low-alloy lath martensite, which includes heating the sample to 750 °C (Ac1: 752 °C), dwelling at 750 °C for 2 s, and quenching directly to room temperature. The high temperature accelerated the spread of the supersaturated carbon atoms in the lath martensite, activated the dislocation migrations and thus their combining and annihilation, and promoted the mass recrystallisation. The reduced dwelling time inhibited the coarsening of the martensitic laths and suppressed the growth of the recrystallized structures. The combination of higher temperature and the shorter dwelling period, so-called flash tempering, gives rise to the same microstructure and mechanical properties as those obtained by the conventional tempering process (i.e., dwelling at 600 °C for 1 h). The high efficient flash tempering, possessing significantly reduced energy and time consumptions, may have important consequence in industrialization of tempering process.
ISSN: 2238-7854
DOI: 10.1016/j.jmrt.2023.06.153
Schools: School of Materials Science and Engineering 
Rights: © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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