Abstract
Five prealloyed powder samples prepared from binary Ir-based refractory superalloys were sintered at 1800°C for 4 h by Pulse Electric Current Sintering (PECS). No metal loss was observed during sintering. The relative densities of the sintered specimens all exceeded 90% T.D. The best one was Ir-13% Hf with the density of 97.82% T.D. Phases detected in sintered samples were in accordance with the phase diagram as expected. Fractured surfaces were observed in two samples (Ir-13% Hf and Ir-15% Zr). Some improvements obtained by using prealloyed powders instead of elemental powders, which were investigated in the previous studies, were presented.
| Original language | English |
|---|---|
| Pages (from-to) | 32-36 |
| Number of pages | 5 |
| Journal | Journal of Materials Engineering and Performance |
| Volume | 11 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2002 Feb 1 |
| Externally published | Yes |
Keywords
- Prealloyed powders
- Pulse electric current sintering
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering