Response of Inconel 617 superalloy to combined ground-based and STS reentry exposureInconel 617 is a nickel-based superalloy which is being considered for heat-shield applications because of its high-temperature strength, good oxidation resistance and high emittance of oxidized surfaces. While the effects of simulated reentry conditions on emittance and oxidation of Inconel 617 have been studied, the combined effects of the ground-based environment with sea salt exposure and the reentry environment have not been evaluated. Experimental results are presented to show the effects of environmental simulation including ground-based and reentry exposure on the emittance and oxidation of Inconel 617. Specimens were exposed to simulated reentry at a surface temperature of 2000 F in the Langley Research Center Hypersonic Materials Environmental Test System (HYMETS) Facility with and without alternate exposures to an atmospheric seashore environment or a laboratory sea salt environment. This paper presents emittance, mass loss, oxide chemistry, and alloy composition data for the specimens.
Document ID
19840054707
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Clark, R. K. (NASA Langley Research Center Hampton, VA, United States)
Unnam, J. (Analytical Services and Materials, Inc. Tabb, VA, United States)