Quenching and partitioning of multiphase aluminum-added steels
Nyyssönen, Tuomo; Oja, Olli; Jussila, Petri; Saastamoinen, Ari; Somani, Mahesh; Peura, Pasi (2019-03-22)
Nyyssönen, T., Oja, O., Jussila, P., Saastamoinen, A., Somani, M., & Peura, P. (2019). Quenching and Partitioning of Multiphase Aluminum-Added Steels. Metals, 9(3), 373. doi:10.3390/met9030373
© 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
https://creativecommons.org/licenses/by/4.0/
https://urn.fi/URN:NBN:fi-fe2019050314164
Tiivistelmä
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.
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