Effect of Delta-Ferrite on the Properties of Welds in Austenitic Steels at Cryogenic Temperatures

Yushchenko, K. A.; Savchenko, V. S.; Solokha, A. M.; Voronin, S. A.

doi:10.1007/978-1-4757-9053-5_160

Cited by 4 publications

(1 citation statement)

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“…Also, precipitation of intermetallic phase is increased in the presence of δ-ferrite. Depending on the temperature of the heat treatment, the δ-ferrite can be transformed into σ-phase, carbides (type M 23 C 6 ) and austenite [3][4][5][6][7]. With regard to austenite, the δ-ferrite remains a chromium-rich area where diffusion of chromium and other alphagenic elements is faster.…”

Section: Introductionmentioning

confidence: 99%

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

Gigović-Gekić

Avdušinović

Hodžić

et al. 2020

Materials and Geoenvironment

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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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Section: Introductionmentioning

confidence: 99%