TY - JOUR N2 - This study presents results of stress rupture test 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-M-509 alloy castings, obtained using the lost-wax method. Casting structure refining was performed with the GTAW method in argon atmosphere, using the current I = 200 A and electrical arc scanning velocity vs = 100, 150, 200 and 250 mm/min. The effect of rapid resolidification of the MAR-M-509 alloy on the microstructure was examined and significant improvement in stress rupture test was observed. L1 - http://journals.pan.pl/Content/87135/PDF/20_paper.pdf L2 - http://journals.pan.pl/Content/87135 PY - 2012 IS - No 4 DO - 10.2478/v10266-012-0118-6 KW - MAR-M-509 alloy KW - Rapid resolidification KW - microstructure KW - Stress rupture test A1 - Trytek, A. A1 - Tupaj, M. A1 - Mróz, M. A1 - Orłowicz, W. PB - The Katowice Branch of the Polish Academy of Sciences DA - 2012 T1 - Stress Rupture Test of MAR-M509 Alloy with Structure Refined by Rapid Resolidification UR - http://journals.pan.pl/dlibra/publication/edition/87135 T2 - Archives of Foundry Engineering ER -