Orr-Sherby-Dorn creep strengths of the refractory-metal alloys C-103, ASTAR-811C, W-5Re, and W-25Re

Robert E. English
1992 AIP Conference Proceedings  
Available creep data for the refractory-metal alloys C-103 (Nb-10%Hf-1%Ti-0.7%Zr), ASTAR-811C (Ta-8%W-1%Re-0.7%Hf-0.025%C), W-5Re (W-5%Re), and W-25Re (W-25%Re) were correlated by the Orr-Sherby-Dorn method and extrapolated to 1 percent creep over 10 years. In addition, useful life was specified to be two standard estimates of error below the mean surface through the data. Over the temperature range of 1200 to 1800 K, ASTAR-811C was found to be the strongest of these alloys. In particular,
more » ... -811C was found to have at 1800 K the same creep strength as W-25Re at 1420 K. The difference between these results and those of Horak and Booker (1990) likely devolves from the comparative lack of long-time data on the tungsten alloys.
doi:10.1063/1.41836 fatcat:icogj6mu4jagtbmwetq33br2ke