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The effect of microstructure on hydrogen embrittlement of the nickel-base superalloy, udimet 700
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Gray, H. R. |
| Copyright Year | 1978 |
| Description | Material from a single heat of cast and wrought Udimet 700 was processed and/or heat treated to produce five material conditions with identical chemical compositions but with distinct microstructural variations, and then evaluated for susceptibility to hydrogen embrittlement. Two prealloyed powder conditions exhibited significantly improved resistance to hydrogen embrittlement, as compared to wrought material. No degradation in notch or smooth tensile strengths occurred, and average ductilities of 25 percent reduction of area were determined for 2 hydrogen evaluation procedures. For the most severe hydrogenation procedure, ductility levels were reduced to 15 percent. These improvements were attributed to cleaner grain boundaries and decreases grain size. |
| File Size | 3382080 |
| Page Count | 33 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19780014289 |
| Archival Resource Key | ark:/13960/t3906xg5j |
| Language | English |
| Publisher Date | 1978-01-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Grain Boundaries Heat Treatment Nickel Alloys Metal Powder Notch Strength Ductility Heat Resistant Alloys Microstructure Hydrogenation Tensile Strength Hydrogen Embrittlement Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
