Significant efficiency improvement of conventional tempering by a novel flash tempering technique

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...

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Main Authors: Ding, Chao, Niu, Gang, Wang, Enmao, Liu, Jinxu, Gong, Na, Liu, Hongfei, Wang, Yong, Yu, Xinpan, Wang, Xuelin, Shang, Chengjia, Wu, Huibin
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/171778
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1717782023-11-10T15:46:04Z Significant efficiency improvement of conventional tempering by a novel flash tempering technique Ding, Chao Niu, Gang Wang, Enmao Liu, Jinxu Gong, Na Liu, Hongfei Wang, Yong Yu, Xinpan Wang, Xuelin Shang, Chengjia Wu, Huibin School of Materials Science and Engineering Engineering::Materials Lath Martensite Flash Tempering 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. Published version C.D. and H.W. appreciate the support from National Natural Science Foundation of China (Grant Nos. 51774033). G.N. acknowledges the support from China Postdoctoral Science Foundation (Grant Nos. 2022M720402). 2023-11-08T00:37:44Z 2023-11-08T00:37:44Z 2023 Journal Article 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. https://dx.doi.org/10.1016/j.jmrt.2023.06.153 2238-7854 https://hdl.handle.net/10356/171778 10.1016/j.jmrt.2023.06.153 2-s2.0-85163822445 25 3551 3560 en Journal of Materials Research and Technology © 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Lath Martensite
Flash Tempering
spellingShingle Engineering::Materials
Lath Martensite
Flash Tempering
Ding, Chao
Niu, Gang
Wang, Enmao
Liu, Jinxu
Gong, Na
Liu, Hongfei
Wang, Yong
Yu, Xinpan
Wang, Xuelin
Shang, Chengjia
Wu, Huibin
Significant efficiency improvement of conventional tempering by a novel flash tempering technique
description 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.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Ding, Chao
Niu, Gang
Wang, Enmao
Liu, Jinxu
Gong, Na
Liu, Hongfei
Wang, Yong
Yu, Xinpan
Wang, Xuelin
Shang, Chengjia
Wu, Huibin
format Article
author Ding, Chao
Niu, Gang
Wang, Enmao
Liu, Jinxu
Gong, Na
Liu, Hongfei
Wang, Yong
Yu, Xinpan
Wang, Xuelin
Shang, Chengjia
Wu, Huibin
author_sort Ding, Chao
title Significant efficiency improvement of conventional tempering by a novel flash tempering technique
title_short Significant efficiency improvement of conventional tempering by a novel flash tempering technique
title_full Significant efficiency improvement of conventional tempering by a novel flash tempering technique
title_fullStr Significant efficiency improvement of conventional tempering by a novel flash tempering technique
title_full_unstemmed Significant efficiency improvement of conventional tempering by a novel flash tempering technique
title_sort significant efficiency improvement of conventional tempering by a novel flash tempering technique
publishDate 2023
url https://hdl.handle.net/10356/171778
_version_ 1783955537720770560