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Open AccessFeature PaperArticle

Advanced Heat Treatments and Complex Ferritic Structures for Bearing Steels

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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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Eurecat Centre Tecnològic de Catalunya, Plaça de la Ciència 2, ES-08243 Manresa, Spain
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Asco Industries Research (CREAS), BP 70045 Hagondange, France
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ArcelorMittal Global R&D, SLab—Steel Labs, Calle Marineros, 4, ES-33490 Avilés, Spain
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NTN-SNR Rulements SA, Rue des Usines 1, FR-74000 Annecy, France
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Department of Engineering Sciences and Mathematics, Luleå University of Technology, SE-97187 Luleå, Sweden
*
Author to whom correspondence should be addressed.
Metals 2019, 9(11), 1137; https://doi.org/10.3390/met9111137
Received: 30 September 2019 / Revised: 14 October 2019 / Accepted: 22 October 2019 / Published: 23 October 2019
(This article belongs to the Special Issue Bearing Steels)
Nanostructured bainitic steels exhibit an optimum strength/toughness combination as a consequence of their extremely fine structure. They have also demonstrated potential for wear-resistance applications. The aim of this work was to develop bearing steels by the multi-scale control of complex ferritic structures, designed using atomic transformation theory and processed by novel heat treatments. Based on the results, the new ball bearings outperformed conventional grades, approaching more expensive material options. View Full-Text
Keywords: steel; bainite; ultra-high strength; wear resistance; ball bearings steel; bainite; ultra-high strength; wear resistance; ball bearings
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G. Caballero, F.; Pujante, J.; Sourmail, T.; Rementeria, R.; De-Castro, D.; Dierickx, P.; Ramírez, G.; Sidoroff-Coicaud, C.; Valizadeh Moghaddam, P.; Vuorinen, E. Advanced Heat Treatments and Complex Ferritic Structures for Bearing Steels. Metals 2019, 9, 1137.

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