Stress Rupture Test of MAR-M509 Alloy with Structure Refined by Rapid Resolidification

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...

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Bibliographic Details
Published in:Archives of foundry engineering 2012-12, Vol.12 (4), p.117-120
Main Authors: Mróz, M., Orłowicz, W., Tupaj, M., Trytek, A.
Format: Article
Language:English
Subjects:
MAR-M-509 alloy
Microstructure
Rapid resolidification
Stress rupture test
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Summary: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
ISSN:1897-3310
DOI:10.2478/v10266-012-0118-6