<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Microstructure of austenitic stainless steel is primarily monophasic, i.e. austenitic. However, precipitation of the δ-ferrite in the austenite matrix is possible depending on the chemical composition of steel. δ-Ferrite is stable on room temperature but it transforms into σ-phase, carbides and austenite during heat treatment. In this work, the results of analysis of influence of temperature and time on decomposition of δ-ferrite are presented. Magnetic induction method, microstructure and hardness analyses were used for testing the degree of decomposition of the δ-ferrite. Analysis of results showed that increase in temperature and time increases the degree of decomposition of δ-ferrite.</p></abstract>

Microstructure of austenitic stainless steel is primarily monophasic, i.e. austenitic. However, precipitation of the δ-ferrite in the austenite matrix is possible depending on the chemical composition of steel. δ-Ferrite is stable on room temperature but it transforms into σ-phase, carbides and austenite during heat treatment. In this work, the results of analysis of influence of temperature and time on decomposition of δ-ferrite are presented. Magnetic induction method, microstructure and hardness analyses were used for testing the degree of decomposition of the δ-ferrite. Analysis of results showed that increase in temperature and time increases the degree of decomposition of δ-ferrite.

Effect of Temperature and Time on Decomposition of δ-ferrite in Austenitic Stainless Steel

Materials and Geoenvironment

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Vpliv temperature in časa na razpad delta ferita v avstenitnem nerjavnem jeklu

Microstructure of austenitic stainless steel is primarily monophasic, i.e. austenitic. However, precipitation of the δ-ferrite in the austenite matrix is...

Effect of Temperature and Time on Decomposition of δ-ferrite in Austenitic Stainless Steel

Article Category: Original scientific paper

Published Online: Jul 27, 2020

Page range: 65 - 71

Received: Mar 20, 2020

Accepted: May 18, 2020

DOI: https://doi.org/10.2478/rmzmag-2020-0007

Keywords
austenitic stainless steel, δ-ferrite, σ-phase, carbides, hardness

© 2020 Almaida Gigović-Gekić et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Effect of Temperature and Time on Decomposition of δ-ferrite in Austenitic Stainless Steel

Article Category: Original scientific paper

Published Online: Jul 27, 2020

Page range: 65 - 71

Received: Mar 20, 2020

Accepted: May 18, 2020

DOI: https://doi.org/10.2478/rmzmag-2020-0007

Keywordsaustenitic stainless steel, δ-ferrite, σ-phase, carbides, hardness

© 2020 Almaida Gigović-Gekić et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
austenitic stainless steel, δ-ferrite, σ-phase, carbides, hardness