Duplex Stainless Steel Subjected to Normalized Thermal Treatment

Abstract:

In the research, the mechanical behavior of duplex stainless steels SAF 2205 and 2507 subjected to Normalized thermal treatments at temperatures at temperatures of 900, 950 and 1000oC for a time of 7 minutes for SAF 2205 and 15 minutes for SAF 2507 were evaluated. It was determined that the mechanical strength increased considerably the higher value was found at 900 °C. It was determined that the K_IC values for the normalized conditions of 900 oC and 950oC, reduce strongly in both steels with respect to the original condition. However, it is clearly reflected that for the normalized condition at 1000 °C the K_IC is fully recovered, and for the temperature range of 700 °C to 900 °C, the values of impact toughness suffer a drastic decrease, caused by the appearance of intermetallic phases.

• Periodical: Key Engineering Materials (Volume 834)
• Pages: 103-109
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.834.103
• Online since: March 2020
• Authors: Laura Sáenz*, Trino Romero, Jesús Chavez, Ruben González, Abraham Corona, Zuleika Tineo
• Keywords: Ductility, Duplex Stainless Steels, Impact Toughness, Mechanical Behavior, Mechanical Strength, Normalized Thermal Treatment

References

[1] Asociación Internacional de Molibdeno, Londres Reino Unido. Directrices prácticas para la fabricación de los aceros inoxidables dúplex,. (2012).

[2] Charles J. Super Duplex Stainless Steels: Structure and Properties", Dúplex Stainless Steel ,91 Conference Proceedings, Beaune, Francia, Volumen 1, Pag. 3. (1991).

[3] Karlsson, L. Intermetalic phase precipitation in dúplex stainless steels and Weld metals: Metallurgy, infuence on properties, welding and testing aspects,. WRC bulletin. Vol. 438.

[4] T. Yamada, S. Okano, H. Kuwano, J. Nucl. Mater. 350 (2006) 47–55.

[5] Olsson, J. Snis, M. Duplex—A new generation of stainless steels for desalination plants. Desalination (2007), 205, 104–113. [CrossRef].

DOI: 10.1016/j.desal.2006.02.051

[6] Dabalá, M. Calliari, I. Variola, A. Corrosion behavior of a superduplex stainless steel in chloride aqueous solution. J. Mater. Eng. Perform. (2004), 13, 237–240. [CrossRef].

DOI: 10.1361/10599490418316

[7] Machuca, L.L. Bailey, S.I. Gubner, R. Watkin, E.L.J. Ginige, M.P. Kaksonen, A.H. Crevice corrosion of duplex stainless steels in the presence of natural marine biofilms. NACE Int. Corros. Conf. Ser. (2012), 5, 3924–3936.

DOI: 10.1016/j.corsci.2012.10.023

[8] Veljkovic,M.; Gozzi, J. Use of duplex stainless steel in economic design of a pressure vessel. J. Press. Vessel Technol. 2007, 129, 155–161. [CrossRef] pp.1-20. (1999).

DOI: 10.1115/1.2389034

[9] K. Chandra, R. Singhal, V. Kain, V.S. Raja, Mater. Sci. Eng. A 527 (2010) 3904–3912.

[10] Chávez J. y González R. Evaluación de la tenacidad de impacto de un acero inoxidable dúplex SAF 2205 al someterlo a un tratamiento térmico de normalizado. Trabajo especial de Grado, Facultad de Ingeniería, Universidad de Carabobo, Venezuela, (2006).

DOI: 10.24265/horizmed.2019.v19n2.08

[11] Corona A. y Tineo Z. Evaluación de la tenacidad de impacto de un acero inoxidable dúplex SAF 2507 sometido a un tratamiento térmico de normalizado. Trabajo especial de grado, Facultad de Ingeniería, Universidad de Carabobo, Venezuela, (2007).

DOI: 10.24265/horizmed.2019.v19n2.08

[12] Ghosh S. y Mondal S. High Temperature ageing behavior of a duplex stainless steel. Materials Characterization. Vol. 59, Nº 12, pp.1776-1783. (2008).

DOI: 10.1016/j.matchar.2008.04.008

[13] B. Raha Study on Deleterious Phases Precipitation on Super Duplex Stainless Steel Grade 6A- ASTM A890. (2018) https://doi.org/10.1016/j.matpr.2017.11.464Get rights and content.

DOI: 10.1016/j.matpr.2017.11.464

[14] Rolfe, S. y Barson J. Fracture and fatigue control in structure. Prentice Hall inc. Englewood Cilff, N.J. (1977).