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Composition effects on mechanical properties of tungsten-rhenium-hafnium-carbon alloys
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Witzke, W. R. |
| Copyright Year | 1973 |
| Description | The mechanical properties of rod and sheet fabricated from arc melted W-4Re-Hf-C alloys containing up to about 0.8 mol percent hafnium carbide (HfC) were evaluated in the as-worked condition. The DBTT's of electropolished bend and tensile specimens were independent of HfC content in this range but dependent on excess Hf or C above that required for stoichiometric HfC. Low temperature ductility was a maximum at Hf contents slightly in excess of stoichiometric. Variations in high temperature strength were also dependent on excess Hf and C. Maximum creep strengthening also occurred at Hf contents in excess of stoichiometric. Analysis of extracted second phase particles indicated that creep strength was reduced by increasing WC content in the HfC particles. |
| File Size | 2478429 |
| Page Count | 29 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730011861 |
| Archival Resource Key | ark:/13960/t5w717c96 |
| Language | English |
| Publisher Date | 1973-03-01 |
| Access Restriction | Open |
| Subject Keyword | Materials, Metallic Stoichiometry Heat Resistant Alloys Hafnium Mechanical Properties Creep Rupture Strength Chemical Composition Thermodynamic Properties Tungsten Alloys Carbon Hafnium Carbides Rhenium Alloys 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 |
