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

United States Patent

March 6, 2001
View the Complete Patent 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)
The United States of America as represented by the United States Department of Energy (Washington, DC)
09/ 564,696
May 4, 2000
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.