[Kovove materialy - Metallic materials]
    Thu - December 05, 2024 - 18:37 No. of hits : 1804109 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 53 (2015), Issue 5

Influence of annealing process on microstructure and mechanical properties of C-Mn dual phase steel
SEBEK, M., HORŇAK, P., LONGAUER, S., ZIMOVČÁK, P., ZÁHUMENSKÝ, P.
vol. 53 (2015), no. 5, pp. 341 - 348
DOI: 10.4149/km_2015_5_341

Abstract
The paper deals with the influence of annealing parameters on the evolution of microstructure and mechanical properties of a dual phase steel. Simulation of annealing regimes by thermo-mechanical simulator Gleeble was conducted. The dual phase steel was annealed in laboratory conditions in accordance with three specified annealing cycles: into intercritical region (780 °C), into austenite region (920 °C) and into austenite region (920 °C) by subsequently cooling into intercritical region (780 °C) with the hold at the temperature of 495 °C. Dwell time at 495 °C simulates submerging of steel sheet into zinc bath. The obtained microstructure consists of three phases: ferritic matrix, martensite, and martensite/bainite grains. To identify the microstructure, transmission electron microscopy (TEM) and nanoindentation experiments were performed.

Key words
dual phase steel, annealing simulation, microstructure evolution, transmission electron microscopy observations, nanoindentation method

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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