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Open AccessArticle

The Influence of Warm Rolling on Microstructure and Deformation Behavior of High Manganese Steels

1
Institute of Metal Forming, RWTH Aachen University, 52072 Aachen, Germany
2
Steel Institute, RWTH Aachen University, 52072 Aachen, Germany
3
Institute of Physical Metallurgy and Metal Physics, RWTH Aachen University, 52074 Aachen, Germany
4
Central Facility for Electron Microscopy, RWTH Aachen University, 52074 Aachen, Germany
*
Author to whom correspondence should be addressed.
Metals 2019, 9(7), 797; https://doi.org/10.3390/met9070797
Received: 17 June 2019 / Revised: 16 July 2019 / Accepted: 17 July 2019 / Published: 18 July 2019
(This article belongs to the Special Issue Physical Metallurgy of High Manganese Steels)
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Abstract

In this work, a Fe-23Mn-0.3C-1Al high manganese twinning-induced plasticity (TWIP) steel is subjected to varying warm rolling procedures in order to increase the yield strength and maintain a notable ductility. A comprehensive material characterization allows for the understanding of the activated deformation mechanisms and their impact on the resulting microstructure, texture, and mechanical properties. The results show a significant enhancement of the yield strength compared to a fully recrystallized Fe-23Mn-0.3C-1Al steel. This behavior is mainly dominated by the change of the active deformation mechanisms during rolling. Deformation twinning is very pronounced at lower temperatures, whereas this mechanism is suppressed at 500 °C and a thickness reduction of up to 50%. The mechanical properties can be tailored by adjusting rolling temperature and thickness reduction to desired applications. View Full-Text
Keywords: high manganese steel; warm rolling; processing; microstructure; texture; mechanical properties; deformation behavior high manganese steel; warm rolling; processing; microstructure; texture; mechanical properties; deformation behavior
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Haupt, M.; Müller, M.; Haase, C.; Sevsek, S.; Brasche, F.; Schwedt, A.; Hirt, G. The Influence of Warm Rolling on Microstructure and Deformation Behavior of High Manganese Steels. Metals 2019, 9, 797.

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