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Metals 2017, 7(9), 326;

Development of Direct Quenched Hot Rolled Martensitic Strip Steels

ArcelorMittal Global R&D Ghent, J.F. Kennedylaan, 9060 Zelzate, Belgium
Author to whom correspondence should be addressed.
Received: 7 June 2017 / Revised: 21 August 2017 / Accepted: 22 August 2017 / Published: 24 August 2017
(This article belongs to the Special Issue Bainite and Martensite: Developments and Challenges)
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Metallurgical concepts for new ultra-high strength martensitic steels have been developed through direct quenching after hot rolling. In addition to the chemical composition, the hot rolling, quenching, and annealing parameters need to be optimized to fulfill the requirements for the demanding applications for which these steels are used. It is also shown that the welding behavior is influenced by the choice of alloying concept. Typical applications also require a high fatigue resistance, especially of formed components. For that reason, a dedicated set-up was developed that allows differentiation between materials, which is illustrated through the effect of inclusions on the fatigue performance of a bent test piece. View Full-Text
Keywords: martensitic steel; direct quenched; industrialization; hot rolling; tempering; welding; fatigue martensitic steel; direct quenched; industrialization; hot rolling; tempering; welding; fatigue

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Bracke, L.; De Knijf, D.; Gerritsen, C.; Hojjati Talemi, R.; Diaz Gonzalez, E. Development of Direct Quenched Hot Rolled Martensitic Strip Steels. Metals 2017, 7, 326.

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