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Dual-phase Cr-Ta alloys for structural applications

United States Patent

June 12, 2001
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
Dual phase alloys of chromium containing 2 to 11 atomic percent tantalum with minor amounts of Mo, Cr, Ti, Y, La, Cr, Si and Ge are disclosed. These alloys contain two phases including Laves phase and Cr-rich solid solution in either eutectic structures or dispersed Laves phase particles in the Cr-rich solid solution matrix. The alloys have superior mechanical properties at high temperature and good oxidation resistance when heated to above C. in air.
Liu; Chain T. (Oak Ridge, TN), Brady; Michael P. (Oak Ridge, TN), Zhu; Jiahong (Knoxville, TN), Tortorelli; Peter F. (Knoxville, TN)
U T Battelle, LLC (Oak Ridge, TN)
09/ 277,081
March 26, 1999
STATEMENT AS TO RIGHTS TO INVENTIONS MADE UNDER FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT The U.S. Government has rights in this invention pursuant to contract number DE-AC05-96OR22464 between Lockheed Martin Energy Research Corporation and the Department of Energy.