Thermal Induced Phase Transformations in Duplex Stainless Steel

Abstract:

The aim of this work is to study the microstructural changes in 2507 type superduplex stainless steel due to heat treatments. Two series of specimens were studied. The first series were heat treated isothermally at 800 °C for different times up to 42 minutes. The second ones were heat treated isochronically for 20 minutes in the temperature range of 720-900 °C. The microstuctural changes were investigated by metallography and by magnetic tests. The first magnetization curves and the saturation magnetization loops were measured by a double yoke DC magnetometer.

• Periodical: Materials Science Forum (Volume 729)
• Pages: 109-113
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.729.109
• Online since: November 2012
• Authors: István Mészáros
• Keywords: Duplex Stainless Steel, Heat Treatment, Magnetic Test, Nondestructive Testing (NDT), Phase Transformation

References

[1] J. Prohászka, Conf. Proc. of MIE University, Tsu, Japan, 6-9. 08. 1997. pp.142-146.

[2] J. Prohászka, J. Dobránszky, EUROMAT '97. Maastricht, Vol. I. 1/649 - 1/652.

[3] R. N. Gunn (ed. ), Duplex Stainless Steels, 1st ed., Abington Publishing, (1997).

[4] F. Stablein– R. Steinitz, Ein Neuer Doppeljoch-Magnetstalprüfer, Archiv für das Eisenhüttenwesen 8, (1935), 549-554.

DOI: 10.1002/srin.193500182

[5] I. Mészáros, Testing of Stainless Steel BY double yoke DC magnetometer, Journal of Electrical Engineering, Vol 61. NO 7/s, 2010, 1-4.

[6] F. Fiorillo: Measurements and Characterization of Magnetic Materials, (Elsevier Pub. Co. ) (2004).