Generation of high strength metal through formation of nanocrystalline structure by laser peening
AssigneeThe Regents of the University of California
InventorsLloyd Hackel, Chol Syn, Donald Lesuer, Oleg Sherby
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Abstract
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.
Claims26
A method of processing a metal piece, comprising the steps of:
- directing a laser beam onto the metal piece for laser peening the metal piece,
- causing relative movement between said laser beam and the metal piece,
- providing between said laser beam and the metal piece a tamping material that is essentially transparent to the laser beam, and
- continuing said laser peening to induce rapid strain and substantial strain in the metal piece and inducing the formation of nanocrystalline structure in the metal piece.
A method of processing a metal piece, comprising the steps of:
- directing a laser beam onto the metal piece for laser peening the metal piece,
- causing relative movement between said laser beam and the metal piece,
- providing an ablative/insulating material adhered to or in intimate contact with the metal piece between said laser beam and the metal piece,
- providing a tamping material that is essentially transparent to the laser beam, and
- continuing said laser peening to induce rapid strain and substantial strain in the metal piece and inducing the formation of nanocrystalline structure in the metal piece.
Dependencies are inferred from the claim text.