Fatigue strength of MAR-M509 alloy with structure refined by rapid crystallization

• Autorzy: Mróz M. , Orłowicz W. , Tupaj M. , Trytek A.
• Języki publikacji: EN

Abstrakty

EN

This study presents test results of high-cycle (N>2⋅10⁷) fatigue bending strength of MAR-M-509 cobalt alloy samples, as cast and after surface refining with a concentrated stream of heat. Tests were conducted on samples of MAR-M59 alloy casts, obtained using the lostwax method. Cast structure refining was performed with the GTAW method in argon atmosphere, using the current I = 200 A and electrical arc scanning velocity v_s = 250 mm/min. The effect of rapid crystallization occurring after the fusion process is refinement of the MAR-M509 alloy cast microstructure and significant improvement in bending fatigue strength.

Słowa kluczowe

EN

MAR-M509 alloy; rapid crystallization; high-cycle fatigue; bending

PL

stop MAR M509; krystalizacja; zmęczenie wysokocyklowe; gięcie

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 3
• Strony: 119--122
• Opis fizyczny: Bibliogr. 5 poz., fot., rys.

Twórcy

autor

Mróz M.

• Technical University of Rzeszow, Department of Casting and Welding, ul. Wincentego Pola 2, 35-959 Rzeszów, Poland

autor

Orłowicz W.

• Technical University of Rzeszow, Department of Casting and Welding, ul. Wincentego Pola 2, 35-959 Rzeszów, Poland

autor

Tupaj M.

• Technical University of Rzeszow, Department of Casting and Welding, ul. Wincentego Pola 2, 35-959 Rzeszów, Poland

autor

Trytek A.

• Technical University of Rzeszow, Department of Casting and Welding, ul. Wincentego Pola 2, 35-959 Rzeszów, Poland

Bibliografia

• [1] Sims C.T., Wagenheim N.T.: The high temperature properties of MAR-M509. J. Met., 22, 1969, 39-47.
• [2] Rypulak A., Orkisz M.: Widmo obciążeń turbinowych silników odrzutowych w trakcie realizacji misji lotniczych. Journal of Koness International Combustion Engines. Wyd. Naukowe Instytutu Lotnictwa, 2001.
• [3] Orłowicz A., Mróz M.: Study on susceptibility of Al-Si alloy castings to surface refinement with TIG arc. Zeitschrift für Meltallkunde, t.96, z.12, 2005, 1391-1397.
• [4] Orłowicz A., Trytek A.: Use of the GTAW method for surface hardening of Cast iron. Welding International vol. 19, nr 5, 2005, 341-348.
• [5] Szala J., Szczok A., Richter J., Cwajna J., Maciejny A.: Selection of methods for etching carbides in MAR-M509 cobalt-base superalloys and acquisition of their images. Materials Characterization, 56, 2006, 325-335.