| 摘要 |
Austenitic alloys are disclosed which consist of iron, nickel, cobalt, chromium, aluminum, and yttrium, and articles utilizing these alloys are described such as claddings for gas turbine buckets. The substitution of selected quantities of nickel or nickel and cobalt in prior art ferrous alloys, together with the use of rather high levels of chromium, yields articles having excellent high-temperature strength, oxidation and hot corrosion resistance, and diffusion and thermal expansion compatibility with superalloy substrates.
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