Ablation layers to prevent pitting in laser peening

Title: Ablation layers to prevent pitting in laser peening

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Abstract

A hybrid ablation layer that comprises a separate under layer is applied to a material to prevent pitting resulting from laser peening. The underlayer adheres to the surface of the workpiece to be peened and does not have bubbles and voids that exceed an acceptable size. One or more overlayers are placed over and in contact with the underlayer. Any bubbles formed under the over layers are insulated from the surface to be peened. The process significantly reduces the incidence of pits on peened surfaces.

Inventors:: Hackel, Lloyd A

Issue Date:: 2016-08-09

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1289919

Patent Number(s):: 9409254

Application Number:: 11/240,676

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):: C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS

B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING

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C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
C21D10/005 - {by laser shock processing}

B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
B23K26/354 - by melting
B23K2103/50 - {Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26}
B23K2103/16 - Composite materials {, e.g. fibre reinforced}
B23K2101/18 - Sheet panels
B23K26/0006 - {taking account of the properties of the material involved
B23K2101/34 - Coated articles {, e.g. plated or painted
B23K26/18 - using absorbing layers on the workpiece, e.g. for marking or protecting purposes
B23K2103/166 - {Multilayered materials}
B23K2103/10 - Aluminium or alloys thereof
B23K2103/08 - Non-ferrous metals or alloys

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DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Resource Relation:: Patent File Date: 2005 Sep 30

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Hackel, Lloyd A. Ablation layers to prevent pitting in laser peening.  United States: N. p., 2016. 
        Web.

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                    Hackel, Lloyd A. Ablation layers to prevent pitting in laser peening.  United States.

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                    Hackel, Lloyd A. Tue .  
        "Ablation layers to prevent pitting in laser peening".  United States.  https://www.osti.gov/servlets/purl/1289919.

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@article{osti_1289919,

  title        = {Ablation layers to prevent pitting in laser peening},

  author       = {Hackel, Lloyd A},

  abstractNote = {A hybrid ablation layer that comprises a separate under layer is applied to a material to prevent pitting resulting from laser peening. The underlayer adheres to the surface of the workpiece to be peened and does not have bubbles and voids that exceed an acceptable size. One or more overlayers are placed over and in contact with the underlayer. Any bubbles formed under the over layers are insulated from the surface to be peened. The process significantly reduces the incidence of pits on peened surfaces.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2016},

  month        = {8}

}

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