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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/12857
Title: Hot-rolled and continuously cooled bainitic steel with good strength–elongation combination
Authors: Das, Sourav
Sinha S.
Lodh A.
Chintha A.R.
Krugla M.
Haldar A.
Published in: Materials Science and Technology (United Kingdom)
Abstract: The current work demonstrates the microstructural evolution and mechanical property evaluation of a newly designed steel composition after hot rolling in laboratory-scale rolling mill, followed by continuous cooling. The steel thus developed has typically about 80% carbide-free bainite; about 20% retained austenite and can deliver ∼1400 MPa ultimate tensile strength along with more than 20% total elongation. The presence of ultra-fine bainite plates (∼100–130 nm thick) with high dislocation density was thought to be responsible for ultra-high strength. Excellent ductility at such strength level could be due to the presence of sufficient amount of retained austenite (∼20%) thermally stable at room temperature but starts transforming to martensite during deformation exhibiting transformation-induced plasticity effect. © 2016 Institute of Materials, Minerals and Mining Published by Taylor & Francis on behalf of the Institute.
Citation: Materials Science and Technology (United Kingdom) (2017), 33(8): 1026-1037
URI: https://doi.org/10.1080/02670836.2016.1268663
http://repository.iitr.ac.in/handle/123456789/12857
Issue Date: 2017
Publisher: Taylor and Francis Ltd.
Keywords: Excellent ductility
Nano-structured bainite
Retained austenite
Ultra-high strength steel
ISSN: 2670836
Author Scopus IDs: 9742316900
7403738979
54882988600
57205520822
57190435469
21733467700
Author Affiliations: Das, S., Research and Development, Tata Steel Europe, Ijmuiden, Netherlands
Sinha, S., Research and Development Division, Tata Steel Limited, Jamshedpur, India
Lodh, A., Research and Development Division, Tata Steel Limited, Jamshedpur, India
Chintha, A.R., Research and Development Division, Tata Steel Limited, Jamshedpur, India
Krugla, M., Research and Development, Tata Steel Europe, Ijmuiden, Netherlands
Haldar, A., Research and Development, Tata Steel Europe, United Kingdom
Funding Details: The authors express their sincere thanks to Prof H. K. D. H. Bhadeshia for lots of discussion over different technical aspects of this work. The authors also thank the management of Tata Steel Limited, India as well as Tata Steel Research and Technology, Netherlands for allowing us to publish the work.
Corresponding Author: Das, S.; IIT RoorkeeIndia; email: souravfmt@iitr.ac.in
Appears in Collections:Journal Publications [MT]

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