Kinetics of the σ Phase Precipitation in Respect of Erosion-corrosion Wear of Duplex Cast Steel

• Autorzy: Brodziak-Hyska A. , Stradomski Z. , Kolan C.

Identyfikatory

DOI

10.2478/afe-2014-0004

• Języki publikacji: EN

Abstrakty

EN

The examined material comprised two grades of corrosion-resistant cast steel, namely GX2CrNiMoN25-6-3 and GX2CrNiMoCuN25-6-3-3, used for example in elements of systems of wet flue gas desulphurisation in power industry. The operating conditions in media heated up to 70°C and containing Cl- and SO₄ ions and solid particles produce high erosive and corrosive wear. The work proposes an application of the σ phase as a component of precipitation strengthening mechanism in order to increase the functional properties of the material. The paper presents the results of examination of the kinetics of σ phase precipitation at a temperature of 800°C and at times ranging from 30 to 180 minutes. Changes in the morphology of precipitates of the σ phase were determined using the value of shape factor R. Resistance to erosion-corrosion wear of duplex cast steel was correlated with the kinetics of sigma phase precipitating.

Słowa kluczowe

EN

innovative foundry materials; innovative technologies; duplex cast steel; sigma phase; shape factor; erosive-corrosive wear

PL

materiały odlewnicze; innowacyjne technologie odlewnicze; staliwa duplex; współczynnik kształtu; korozja; zużycie

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2014
• Tom: Vol. 14, iss. 1
• Strony: 17--20
• Opis fizyczny: Bibliogr. 6 poz., rys., tab.

Twórcy

autor

Brodziak-Hyska A.

• Department of Materials Science, Technical University of Częstochowa, Poland

autor

Stradomski Z.

• Department of Materials Science, Technical University of Częstochowa, Poland

autor

Kolan C.

• Department of Materials Science, Technical University of Częstochowa, Poland

Bibliografia

• [1] Voronenko, B. I. (1997). Austenitic-ferritic stainless steels. Metal Science and Heat Treatment. 39(9-10), 20-29.
• [2] Pohl, M., Storz, O. & Glogowski, T. (2007). Effect of intermetallic precipitations on the properties of duplex stainless steel. Materials Characterization. 58, 65-71.
• [3] Sieurin, H. & Sandstrom, R. (2007). Sigma phase precipitation in duplex stainless steel 2205. Materials Science and Engineering A. 444, 271-276.
• [4] Kwok, C. T., Man, H. C. &Leung, L. K. (1997). Effect of temperature, pH and sulphide on the cavitation erosion behaviour of super duplex stainless steel. Wear. 211, 84-93.
• [5] Stradomski, Z., Brodziak-Hyska, A. & Kolan, C. (2012). Optimization of sigma phase precipitates with respect to the functional properties of duplex cast steel. Archives of Foundry Engineering. 12(2), 75-78.
• [6] Stradomski, Z. & Brodziak, A. (2010). Assessment the possibility of enhancing the tribological properties of the ferritic-austenitic cast steel. Archives of Foundry Engineering. 10(1), 287-290.