Title: Heat treatment strategies for hot-rolled and cold-rolled medium-Mn sheet steels
Authors: Grajcar, Adam
Morawiec, Mateusz
Skowronek, Adam
Dykas, Jakub
Citation: JIRKOVÁ, Hana ed.; JENÍČEK, Štepán ed. Proceedings PING 2019: modern trends in material engineering: 10.-13.09.2019, Pilsen. 1. vyd. Plzeň: University of West Bohemia, 2019, s. 32. ISBN 978-80-261-0879-5.
Issue Date: 2019
Publisher: University of West Bohemia
Document type: konferenční příspěvek
URI: http://hdl.handle.net/11025/35220
ISBN: 978-80-261-0879-5
Keywords: středně-manganová ocel;mezikritické žíhání;ocel válcovaná za tepla;zadržený austenit
Keywords in different language: medium-Mn steel;intercritical annealing;hot-rolled steel;retained austenite
Abstract in different language: Heat treatment strategies for advanced high-strength medium-Mn sheet steels are addressed. A review of the available thermal cycles for cold-rolled and hot-rolled sheets are presented. The benefits from the intercritical annealing following hot-rolling or cold-rolling are emphasized. The examples of intercritical annealing for the hotrolled sheets of initial martensitic microstructure are provided. The heat treatment was performed in a temperature range of 680-720°C for various times from 1 to 5 hours. The material used in the experiment was a medium-Mn steel containing 0.16% C, 4.7% Mn, 1.6% Al, 0.2% Mo, 0.2% Si. The scope of the research included dilatometer tests, hardness tests and microstructural characterization. The effects of temperature and time on a stabilization of retained austenite are assessed. Intercritical annealing performed at 700 and 680°C allowed forming some stable retained austenite in the microstructure. Moreover, some coiling simulations for hot-rolled strips are described.
Rights: © University of West Bohemia
Appears in Collections:Proceedings PING 2019: modern trends in material engineering
Proceedings PING 2019: modern trends in material engineering

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