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Method for producing ultrafine-grained materials using repetitive corrugation and straightening

United States Patent Application

20020088506
A1
View the Complete Application at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
A method of refining the grain structure and improving the hardness and strength properties of a metal or metal alloy workpiece is disclosed. The workpiece is subjected to forces that corrugate and then straighten the workpiece. These steps are repeated until an ultrafine-grained product having improved hardness and strength is produced.
Zhu, Yuntian T. (Los Alamos, NM), Lowe, Terry C. (Santa Fe, NM), Jiang, Honggang (Los Alamos, NM), Huang, Jianyu (Los Alamos, NM)
09/ 799,333
March 5, 2001
[0001] This invention was made with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy to The Regents to the University of California. The U.S. Government has certain rights in the invention.