Abstract
The effects of B content on the microstructures and compression properties of the Ir-15at%Nb two-phase refractory superalloy were studied at both room and high temperatures. The yield strengths of the B-doped Ir-15at%Nb alloys were higher than that of the undoped alloy at both room and high temperatures if the B content was around an optimum value, which was about 200 wppm for the Ir-14at%Nb alloy. The fracture mode changed from intergranular fracture in the Ir-15at%Nb alloy to transgranular cleavage in the B-doped alloys. Doping B in the Ir-15at%Nb alloy had little effect on its compression ductility.
Original language | English |
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Pages (from-to) | 1079-1083 |
Number of pages | 5 |
Journal | Scripta Materialia |
Volume | 41 |
Issue number | 10 |
DOIs | |
Publication status | Published - 1999 Oct 22 |
Externally published | Yes |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys