GAS TURBINE AND JET ENGINE FUELS
Abstract
Twelve-hour metal loss tests on the effect of sulfur on turbine inlet guide vanes using a 2 inch research combustor operating under conditions producing 2000 F exhaust gases were completed. Data are now available on sulfur free and 1.0% sulfur fuels. Five typical current-generation superalloys including Udimet 500, Waspalloy, Haynes Alloy 25, Rene 41 and Hastelloy R-235 were evaluated. Results indicate that 1% fuel sulfur or, rather, the gaseous sulfur compounds produced upon combustion of this sulfur, had no effect upon the durability of any of the alloys tested. Haynes Alloy 25, a cobalt base alloy, showed best performance, Hastelloy R-235 poorest performance. These extremes differed by a factor of about five. The balance of the alloys performed comparably and inter mediate between these extremes. Only Haynes Alloy 25 and Waspalloy showed more degradation of tensile strength when exposed to a sulfur atmosphere than when exposed to a sulfur-free atmosphere. HA25 lost nearly twice as much tensile strength with sulfur as without. The indicated degradation of Waspalloy strength by sulfur is considered only marginally significant. All the alloys suffered marked losses in ductility after exposure, suggesting the occurrence of some intergranular oxidation.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1963
- Accession Number
- AD0406885
Entities
People
- W. L. Streets