【摘 要】
：
The creep behaviors of the Ni-added Ir 85Nb15 alloys were investigated at 1 650～1 800 ℃ by compressi on tests in vacuum. X-ray diffractometry, transmission elec
【机 构】
：
National Institute for Materials Science
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The creep behaviors of the Ni-added Ir 85Nb15 alloys were investigated at 1 650～1 800 ℃ by compressi on tests in vacuum. X-ray diffractometry, transmission electron microscopy and scanning electron microscopy were conducted to characterize the microstructure and lattice misfit change by the addition of Ni in the Ir85Nb15 alloy. The results reveal that the Ni addition has a significant effect on the creep resistance of the Ir85Nb15 two-phase refractory superal loys. Basing on the results, the relationship among the Ni addition, lattice mis fit, microstructure development, and the creep behavior in the Ni-added Ir8 5Nb15 alloys is discussed.
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