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- Title
Compressive Creep Properties of Ir-Base Refractory Superalloys.
- Authors
Yamabe-Mitarai, Y.; Gu, Y.; Harada, H.; Huang, C.
- Abstract
Ir-base alloys with the fcc and L12-Ir3X (X = Nb, Zr) two-phase structure have been developed as next-generation high-temperature materials. The compressive creep behavior of Ir-Nb and Ir-Zr alloys was investigated at 2073 K under 137 MPa. The effect of addition of the third element, Zr, on the creep behavior of an Ir-Nb alloy was also investigated at 2073 K for 137 MPa. The creep rate became two orders lower by addition of a small amount of Zr. The lattice misfit change between the fcc and L12 two phase by addition of Zr and the deformation structure in binary and ternary alloys after a creep test were also investigated. The creep behavior is discussed in terres of the lattice misfit, precipitate shape, and their distribution.
- Subjects
ALLOYS; METAL creep; PLASTIC properties of metals; HIGH temperatures; THERMAL stresses; TERNARY alloys
- Publication
Metallurgical & Materials Transactions. Part A, 2005, Vol 36, Issue 3, p547
- ISSN
1073-5623
- Publication type
Article
- DOI
10.1007/s11661-005-0169-1