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Cast heat-resistant austenitic steel with improved temperature creep properties and balanced alloying element additions and methodology for development of the same

United States Patent

8,318,083
November 27, 2012
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
The present invention addresses the need for new austenitic steel compositions with higher creep strength and higher upper temperatures. The new austenitic steel compositions retain desirable phases, such as austenite, M.sub.23C.sub.6, and MC in its microstructure to higher temperatures. The present invention also discloses a methodology for the development of new austenitic steel compositions with higher creep strength and higher upper temperatures.
Pankiw; Roman I (Greensburg, PA), Muralidharan; Govindarajan (Knoxville, TN), Sikka; Vinod Kumar (Oak Ridge, TN), Maziasz; Philip J. (Oak Ridge, TN)
UT-Battelle, LLC (Oak Ridge, TN)
12/ 839,844
20100303669
July 20, 2010
STATEMENT OF FEDERAL FUNDING The United States government has rights to this invention pursuant to contract no. DE-AC05-00OR22725 between the United States Department of Energy and UT-Battelle, LLC. This invention was made under Cooperative Research and Development Agreement ("CRADA") ORNL 02-0632 between Duraloy Technologies, Inc. and UT-Battelle, LLC.