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Generation of high strength metal through formation of nanocrystalline structure by laser peening

United States Patent Application

20060065333
A1
View the Complete Application at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A method of processing a metal piece comprises a number of steps. One step comprises directing a laser beam onto the metal piece for laser peening the metal piece. Another step comprises causing relative movement between the laser beam and the metal piece. Another step comprises providing a tamping material between the laser beam and the metal piece. Another step comprises continuing the laser peening to induce rapid strain and substantial strain in the metal piece and inducing the formation of nanocrystalline structure in the metal piece.
Hackel, Lloyd A. (Livermore, CA), Syn, Chol K. (Moraga, CA), Lesuer, Donald R. (Livermore, CA), Sherby, Oleg D. (Menlo Park, CA)
The Regents of the University of California
10/ 953,203
September 28, 2004
[0001] The United States Government has rights in this invention pursuant to Contract No. W-7405-ENG-48 between the United States Department of Energy and the University of California for the operation of Lawrence Livermore National Laboratory.