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Open AccessFeature PaperArticle

Understanding Mechanical Properties of Nano-Grained Bainitic Steels from Multiscale Structural Analysis

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Department of Physical Metallurgy, National Center for Metallurgical Research (CENIM-CSIC), Avda Gregorio del Amo, 8, E-28040 Madrid, Spain
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ArcelorMittal, SLab—Steel Labs: Global R&D, Calle Marineros, 4, 33490 Avilés, Asturias, Spain
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Materials Testing, University of Kaiserslautern, Gottlieb-Daimler-Straße, 67663 Kaiserslautern, Germany
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Department of Materials Science and Engineering, National Taiwan University, 1, Roosevelt Rd. Sec. 4, Taipei 106, Taiwan
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Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, PO Box 2008 MS6064, Oak Ridge, TN 37831-6064, USA
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Metallurgy Department, Asco Industries Research (CREAS), BP 70045 Hagondange, France
*
Author to whom correspondence should be addressed.
Metals 2019, 9(4), 426; https://doi.org/10.3390/met9040426
Received: 26 March 2019 / Revised: 4 April 2019 / Accepted: 8 April 2019 / Published: 9 April 2019
(This article belongs to the Special Issue Development of Bainitic Steels)
Steel components working in extreme conditions require materials presenting the highest performances. Nowadays, nanoengineering is being applied to the development of ultra-high strength steels as a key-enabling technology in the steel sector. The present article describes the multiscale structure of nano-grained steels designed using atomic transformation theory and processed by a simple heat treatment. Outstanding mechanical properties for these novel steels are reported, and strain-hardening mechanisms are discussed. View Full-Text
Keywords: steel; bainite; ultra-high strength; ductility; in-use properties steel; bainite; ultra-high strength; ductility; in-use properties
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MDPI and ACS Style

Caballero, F.G.; Rementeria, R.; Morales-Rivas, L.; Benito-Alfonso, M.; Yang, J.-R.; de Castro, D.; Poplawsky, J.D.; Sourmail, T.; Garcia-Mateo, C. Understanding Mechanical Properties of Nano-Grained Bainitic Steels from Multiscale Structural Analysis. Metals 2019, 9, 426.

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