Abstract
The effects of various Nb, Ni, Mo, B, and C content on the microstructures and deformation behaviours of Ir-Nb fcc-L12 two-phase refractory superalloys were investigated at both room and high temperatures. The results showed that the intergranular fracture occurring in Ir single-phase alloys could be governed by controlling the microstructures around GBs and alloying Ni, B and C in Ir-15at%Nb two-phase alloys. The results also showed that Ir-15at%Nb two-phase refractory superalloys alloyed with about 10at% Ni were superior to the binary Ir-15at%Nb two-phase alloy as an ultra-high temperature structural material in terms of strength, fracture behavior, and density.
| Original language | English |
|---|---|
| Pages (from-to) | 669-676 |
| Number of pages | 8 |
| Journal | Key Engineering Materials |
| Volume | 171-174 |
| Publication status | Published - 2000 Jan 1 |
| Externally published | Yes |
| Event | Proceedings of the 1999 8th International Conference on Creep and Fracture of Engineering Materials and Structures - Tsukuba, Jpn Duration: 1999 Nov 1 → 1999 Nov 5 |
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering