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Metals 2019, 9(3), 373; https://doi.org/10.3390/met9030373

Quenching and Partitioning of Multiphase Aluminum-Added Steels

1
Laboratory of Metals Technology, Faculty of Engineering and Natural Sciences, Materials Science, Tampere University, Korkeakoulunkatu 6, 33720 Tampere, Finland
2
Outotec Oyj, Pori Outotec Research Center, Kuparitie 10, 28330 Pori, Finland
3
Product Development, SSAB Europe Oy, Harvialantie 420, 13300 Hämeenlinna, Finland
4
Faculty of Technology, Materials and Mechanical Engineering, University of Oulu, 90014 Oulun Yliopisto, Finland
*
Author to whom correspondence should be addressed.
Received: 27 February 2019 / Revised: 18 March 2019 / Accepted: 19 March 2019 / Published: 22 March 2019
(This article belongs to the Special Issue Advances in Low-carbon and Stainless Steels)
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Abstract

The quenching and partitioning response following intercritical annealing was investigated for three lean TRIP-type high-Al steel compositions. Depending on the intercritical austenite fraction following annealing, the steels assumed either a ferrite/martensite/retained austenite microstructure or a multiphase structure with ferritic, bainitic and martensitic constituents along with retained austenite. The amount of retained austenite was found to correlate with the initial quench temperature and, depending on the intercritical annealing condition prior to initial quenching, with the uniform and ultimate elongations measured in tensile testing. View Full-Text
Keywords: steel; martensite; austenite; quenching; partitioning; dilatometry steel; martensite; austenite; quenching; partitioning; dilatometry
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Nyyssönen, T.; Oja, O.; Jussila, P.; Saastamoinen, A.; Somani, M.; Peura, P. Quenching and Partitioning of Multiphase Aluminum-Added Steels. Metals 2019, 9, 373.

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