The influence of sigma phase on erosion and corrosion properties of duplex steel

• Autorzy: Stradomski Z. , Brodziak A.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of investigations concerning the influence of σ phase precipitating on the erosion and corrosion properties of ferritic-austenitic cast steel. The object of investigation have been two grades of corrosion-resistant cast steel: GX2CrNiMoCuN25-6-3-3 and GX2CrNiMoN25-6-3. The examinations have involved measurements for obtaining potentiodynamic curves, examination of erosion and corrosion resistance, and microstructural analysis. The supersaturated cast steel and the material after heat treatment have been examined. It has been found that the tribological properties of supersaturated cast steel are worse than those of the supersaturated and annealed cast steel. The highest erosion and corrosion resistance has been achieved as a result of ferrite decomposition δ → γ’+ σ. The examinations of corrosion resistance have revealed that the ageing process after supersaturation do not cause significant changes in the anti-corrosive properties.

Słowa kluczowe

EN

innovative foundry materials; innovative foundry technologies; duplex cast steel; sigma phase; tribology; corrosion

PL

materiały odlewnicze; innowacyjne technologie odlewnicze; staliwa duplex; tribologia; korozja

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 3
• Strony: 85--88
• Opis fizyczny: Bibliogr. 10 poz., rys., tab., wykr.

Twórcy

autor

Stradomski Z.

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

autor

Brodziak A.

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

Bibliografia

• [1] D. Dyja., Z. Stradomski, S. Stachura, Optimalisation of structure and operational properties of a duplex cast steel. Duplex 2007, International Conference & Expo Grado, Italy, pp.363÷368.
• [2] D. Dyja, Z. Stradomski, A. Pirek, Microstructural and fracture analysis of aged cast duplex steel. Strength of Materials, 2008, vol. 40, No.1, pp. 22-125.
• [3] R. H. Kozłowski, Composite of austenitic-ferritic stainless steel, Journal of Materials processing Technology, 53 (1995), pp. 239-246.
• [4] M. Pohl, O. Storz, T. Glogowski, Effect of intermetallic precipitations on the properties of duplex stainless steel, Mater. Characterization 58 (2007) pp. 65-71.
• [5] A. Mazurkiewicz, J. Banaś, The role of copper in the Cr-Ni and Cr high alloy cast steel, Nowe Osiągnięcia w Badaniach i Inżynierii Korozyjnej, Poraj 1994, pp. 152-157.
• [6] J. Banaś, J. Głownia, B. Kalandyk, B. Szypuła, Corrosion and passivity behavior of duplex stainless steel with nitrogen content, 3rd Kurt Schwabe Corrosion Symposium Novel materials and methods for improvement of corrosion resistance, Zakopane, 2000, pp. 235-240.
• [7] M. Gajewski, Role of copper in precipitation hardening of high-alloy Cr-Ni cast steels, ASM International, Vol. 15(1), 2006, pp.95-101.
• [8] V.S. Moura, L.D. Lima, J.M. Pardal, A.Y. Kina, Influence of microstructure on the corrosion resistance of the duplex stainless steel UNS S31803, Materials characterization 59 (2008), pp.1127-1132.
• [9] Z. Pirowski, W. Uhl, A. Gwiżdż, Studies of the erosivecorrosion wear resistance in some selected grades of Cr-Ni-Mo cast steel in medium of chloride ions, Prace Instytutu Odlewnictwa 1-2 (1997), 167-190.
• [10] A. Brodziak, Z. Stradomski, Assessment the possibility of enhancing the tribological properties of the ferritic-austenitic cast steel, Archives of Foundry Engineering (in press).