Effect of Silicon Addition on the Microstructure of Cast 24Cr-5Ni-2.5Mo-xSi Duplex Steel

• Autorzy: Kalandyk B. , Zapała R. , Witkowska M. , Kowalska J.

Identyfikatory

DOI

10.24425/118835

• Języki publikacji: EN

Abstrakty

EN

Characteristics of the microstructure of corrosion-resistant cast 24Cr-5Ni-2.5Mo duplex steel after introduction of 0.98, 1.67 and 4.3% Si were described. Based on the test results it has been found that silicon addition introduced to the corrosion-resistant cast two-phase duplex steel significantly reduces austenite content in the alloy matrix. Increasing silicon content in the test alloy to 4.3% has resulted, in addition to the elimination of austenite, also in the precipitation of Si-containing intermetallic phases at the grain boundaries and inside the grains. The precipitates were characterized by varying content of Cr and Mo, indicating the presence in the structure of more than one type of the brittle phase characteristic for this group of materials. The simulation using Thermo-Calc software has confirmed the presence of ferrite in all tested alloys. In the material containing 4.3% Si, the Cr and Si enriched precipitates, such as G phase and Cr3Si were additionally observed to occur.

Słowa kluczowe

EN

stainless steels; microstructure of cast; Thermo-Calc; duplex steel

PL

stale nierdzewne; mikrostruktura odlewu; Thermo-Calc; stal duplex

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 18, iss. 1
• Strony: 186--190
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Kalandyk B.

• AGH - University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland

autor

Zapała R.

• AGH - University of Science and Technology, Faculty of Foundry Engineering, Krakow, Poland

autor

Witkowska M.

• AGH - University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Krakow, Poland

autor

Kowalska J.

• AGH - University of Science and Technology, Faculty of Metals Engineering and Industrial Computer Science, Krakow, Poland

Bibliografia

• [1] Sedriks, A.J. (1996). Corrosion of stainless steels. New York: John Wiley&Sons.
• [2] Kalandyk, B. (2011). Characteristic of microstructure and properties of castings made from ferritic - austenitic cast steel. Katowice-Gliwice: Ed. Archives of Foundry Engineering. (in Polish).
• [3] Kalandyk, B., Zapała, R., Kasińska, J. & Wróbel, M. (2015). Microstructure and mechanical properties of high-alloyed 23Cr-5Mn-2Ni-3Mo cast steel. Archives of Metallurgy and Materials. 60(4), 2529-2533.
• [4] Colombier, L., Hochman, J. (1964). Aciers inoxydables. Aciers refractaires. Paris: Dunod.
• [5] Kim, Y-J., Ugurly, O., Jiang, Ch., Gleeson, B. & Chumbley, S. (2007). Microstructural evolution of secondary phases in the cast duplex stainless steels CD3Mn and CD3MWCuN. Metallurgical and Materials Transactions A. 38A(2), 203-211. DOI:10.1007/s11661-006-9049-6.
• [6] Lin, K., Shi, H., Ma, L. & Ding, Y. (2012). The analysis of secondary phases generated during isothermal aging of duplex stainless steels. Applied Mechanics and Materials. 193-194, p.411-417. DOI: 10.4028 /www.scientific.net/AMM.193-194.411.
• [7] Suutala, N., Takalo, T. & Moisio, T. (1980). Ferritic-austenitic solidifications model in austenitic stainless steel. Metalurgicall Transations A. 11A, 717-725.
• [8] Stradomski, Z. (2010). Microstructure in problems of abrasion-resisting cast steels. Częstochowa: Ed. by Czestochowa University of Technology, no 88. (in Polish).
• [9] Ghusoon Ridha, M., Mahadzir, I., Syarifah, N.A. & Hassan, A.A. (2017). Effects of heat input on microstructure, corrosion and mechanical characterisation of welded austenitic and duplex stainless steels. Metals. 7(39), 1-18. DOI: 10.3390 /met7020039.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)