| 摘要 |
<p>This invention relates to austenitic alloys of iron, chromium, aluminum, and yttrium used as cladding suitable for high temperature applications in corrosive gas turbine atmospheres. These alloys are normally ferritic in nature, but they are rendered sustenitic in accord with this invention. This is accomplished by adding to the alloys selected quantities of nickel or nickel and cobalt, at least 30% by weight. The addition of these elements yields a 66% or greater face centred cubic crystal structure having high temperature properties which are superior to the base alloys without diminishing the excellent high-temperature oxidation and hot corrosion resistance of the base alloys.</p> |
