Title:	Coiling simulations of medium-Mn sheet steels using dilatometry
Authors:	Morawiec, Mateusz Skowronek, A. Pakieła, W. Grajcar, A.
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. 50. ISBN 978-80-261-0879-5.
Issue Date:	2019
Publisher:	University of West Bohemia
Document type:	konferenční příspěvek conferenceObject
URI:	http://hdl.handle.net/11025/35233
ISBN:	978-80-261-0879-5
Keywords:	středně-manganová ocel;dilatometrická analýza;kinetická transformace fází;AHSS
Keywords in different language:	medium-Mn steel;dilatometric analysis;phase transformation kinetic;AHSS
Abstract in different language:	The work presents the results of coiling simulations of two medium manganese steels containing 3 and 5% Mn. The steels were subjected to the heat treatment including an austenitization at 1000°C for 300s and next isothermal holding at temperatures of 750, 700, 650 and 500°C for duration of 5 hours. The results of dilatometric analysis showed that in case of the 3Mn steel the ferritic transformation occured during the isothermal holding at 750 and 700°C. The amount of ferrite created during this step at 750°C was smaller compared to 700°C. Lowering the temperature to 650°C led to a transformation lack during the holding time. At 500°C a bainitic transformation occurred. Increasing the manganese content resulted in prolonging the incubation time before any transformations. For the 5Mn steel for all isothermal holding temperatures no transformation occurred within 5 hours. The conclusion was that manganese shifted significantly the ferritic and bainitic regions to longer times.
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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