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Progress toward a tungsten alloy wire/high temperature alloy composite turbine blade
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ritzert, F. J. Dreshfield, R. L. |
| Copyright Year | 1992 |
| Description | A tungsten alloy wire reinforced high temperature alloy composite is being developed for potential application as a hollow turbine blade for advanced rocket engine turbopumps. The W-24Re-HfC alloy wire used for these composite blades provides an excellent balance of strength and wire ductility. Preliminary fabrication, specimen design, and characterization studies were conducted by using commercially available W218 tungsten wire in place of the W-24Re-Hfc wire. Subsequently, two-ply, 50 vol pct composite panels using the W-24Re-HfC wire were fabricated. Tensile tests and metallographic studies were performed to determine the material viability. Tensile strengths of a Waspaloy matrix composite at 870 C were 90 pct of the value expected from rule-of-mixtures calculations. During processing of this Waspaloy matrix composite, a brittle phase was formed at the wire/matrix interface. Circumferential wire cracks were found in this phase. Wire coating and process evaluation efforts were performed in an attempt to solve the reaction problem. Although problems were encountered in this study, wire reinforced high temperature alloy composites continue to show promise for turbopump turbine blade material improvement. |
| File Size | 5232264 |
| Page Count | 11 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930006397 |
| Archival Resource Key | ark:/13960/t01z9411r |
| Language | English |
| Publisher Date | 1992-11-01 |
| Access Restriction | Open |
| Subject Keyword | Metallic Materials Turbine Blades Waspaloy Ductility Tensile Tests Metallography Rocket Engines Brittleness Wire Powder Metallurgy Fabrication Cracks Turbine Pumps Heat Resistant Alloys Yield Strength Composite Structures Microstructure Tungsten Alloys Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
