Qian, F. and Rainforth, W.M. orcid.org/0000-0003-3898-0318 (2019) The formation mechanism of reverted austenite in Mn-based maraging steels. Journal of Materials Science, 54 (8). pp. 6624-6631. ISSN 0022-2461
Abstract
Based on the microstructural evolution in Mn-based maraging steels aged at 460–540 °C, the formation mechanism of reverted austenite is proposed. Reverted austenite formed at grain boundaries at the onset of aging. During further aging, the accumulated Mn enrichment at newly formed α′/γ interfaces led to thin austenite layers growing into lath-like austenite grains. The lateral growth of lath-like reverted austenite was sluggish, reflecting the low diffusivity of Mn. We show that reverted austenite formed by a shear-dominated mechanism assisted by a small amount of Mn diffusion, whereas the nucleation of reverted austenite within martensite laths was kinetically slower.
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Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Author(s) 2019. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 06 Mar 2019 14:59 |
Last Modified: | 06 Mar 2019 14:59 |
Published Version: | https://doi.org/10.1007/s10853-019-03319-9 |
Status: | Published |
Publisher: | Springer Verlag (Germany) |
Refereed: | Yes |
Identification Number: | 10.1007/s10853-019-03319-9 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:141489 |
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