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METHOD OF CONSOLIDATING PRECIPITATION-HARDENABLE ALLOYS TO FORM CONSOLIDATED ARTICLES WITH ULTRA-FINE GRAIN MICROSTRUCTURES

United States Patent Application

20060278308
A1
View the Complete Application at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A method by which consolidated articles can be produced from nanocrystalline materials to have mechanical properties that can be improved through thermal treatment. The method entails machining a body to produce polycrystalline chips having nanocrystalline microstructures, and then consolidating the chips to form a consolidated article having mechanical properties that exceed that of the body from which the chips were formed. In particular, consolidation of nanocrystalline chips formed by machining a supersaturated solid-solution body causes precipitation of a fine dispersion of precipitates in the consolidated article, with the potential for certain properties to even improve during consolidation or subsequent thermal treatment of the consolidated article.
Shankar, M. Ravi (West Lafayette, IN), Chandrasekar, Srinivasan (West Lafayette, IN), Compton, W. Dale (West Lafayette, IN), King, Alexander H. (West Lafayette, IN), Trumble, Kevin P. (West Lafayette, IN)
Purdue Research Foundation (West Lafayette IN 47906-1075)
11/ 381,519
May 3, 2006
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH [0002] This invention was made with Government support under Agreement No. DE-AC05-000R22725, awarded by the U.S. Department of Energy. The Government has certain rights in the invention.