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

Almaida Gigović-Gekić; Hasan Avdušinović; Amna Hodžić; Ermina Mandžuka

doi:10.2478/rmzmag-2020-0007

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.

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

Abstract

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