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Materials Science and Technology Volume 36, 2020 - Issue 12
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Research Articles

Simulation and characterisation of the microstructure of ultra-fast heated dual-phase steel

A. Banisa Laboratory of Physical Metallurgy, Division of Metallurgy and Materials, School of Mining & Metallurgical Engineering, National Technical University of Athens, Athens, GreeceCorrespondence[email protected]
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M. Bouzounia Laboratory of Physical Metallurgy, Division of Metallurgy and Materials, School of Mining & Metallurgical Engineering, National Technical University of Athens, Athens, Greece;b Department of Physical Metallurgy and Forming, Hellenic Research Centre for Metals S.A.—ELKEME S.A., Viotia, GreeceORCID Iconhttps://orcid.org/0000-0001-7242-7589
ORCID Icon,
R. H. Petrovc Department of Electromechanical, Systems, & Metal Engineering, Ghent University, Ghent, Belgium;d Department of Materials Science and Engineering, Delft University of Technology, Delft, The Netherlands
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S. Papaefthymioua Laboratory of Physical Metallurgy, Division of Metallurgy and Materials, School of Mining & Metallurgical Engineering, National Technical University of Athens, Athens, GreeceORCID Iconhttps://orcid.org/0000-0001-8137-938X
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Pages 1282-1291 | Received 31 Jan 2020, Accepted 31 May 2020, Published online: 12 Jun 2020
 
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Abstract

The current study focuses on the composition of the constituents that are obtained from ultra-fast heating and the composition of the parent austenite that was achieved at the peak temperature. In order to analyse the content and distribution of important elements such as carbon, manganese, chromium and molybdenum in the microstructure, simulation software was used. It is also found that the content of these elements shows a gradient in the microstructure in relation to the distance from the undissolved cementite. This leads to carbon-rich areas in the vicinity of cementite and carbon-depleted areas as the distance from the cementite grows. The former creates ideal conditions for the retainment of austenite due to the higher carbon content while the latter creates conditions that enable the formation of bainite in the microstructure.

Disclosure statement

No potential conflict of interest was reported by the author(s).

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