Process for producing dispersion-hardened superalloys by internal oxidation
Abstract
Abstract Iron-, nickel-, and cobalt-base alloys containing chromium in an amount sufficient to provide excellent scaling resistance to high temperature are made pervious to controlled quantities of oxygen by alloying with an appropriate amount of a metal selected from thorium, yttrium, or one of the rare earth (4f) metals to form a lamellar eutectic structure. Powders of these alloys are roasted in air to pick up oxygen, then cold compacted and sintered to consolidate the mass while at the same time allowing diffusion of oxygen to form a uniform and ultrafine dispersion of stable oxide particles. Subsequent hot mechanical working shapes and further consolidates the alloy while improving the distribution of metal oxide particles.
Inventors
- 👤 Joseph P Hammond
- 👤 Ji Young Chang
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
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