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Title: Laser peening for reducing hydrogen embrittlement

Abstract

A laser peening process for the densification of metal surfaces and sub-layers and for changing surface chemical activities provides retardation of the up-take and penetration of atoms and molecules, particularly Hydrogen, which improves the lifetime of such laser peened metals. Penetration of hydrogen into metals initiates an embrittlement that leaves the material susceptible to cracking.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Lawrence Livermore National Security, LLC, Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176316
Patent Number(s):
7723643
Application Number:
11/400,618
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Hackel, Lloyd A., Zaleski, Tania M., Chen, Hao-Lin, Hill, Michael R., and Liu, Kevin K. Laser peening for reducing hydrogen embrittlement. United States: N. p., 2010. Web.
Hackel, Lloyd A., Zaleski, Tania M., Chen, Hao-Lin, Hill, Michael R., & Liu, Kevin K. Laser peening for reducing hydrogen embrittlement. United States.
Hackel, Lloyd A., Zaleski, Tania M., Chen, Hao-Lin, Hill, Michael R., and Liu, Kevin K. Tue . "Laser peening for reducing hydrogen embrittlement". United States. https://www.osti.gov/servlets/purl/1176316.
@article{osti_1176316,
title = {Laser peening for reducing hydrogen embrittlement},
author = {Hackel, Lloyd A. and Zaleski, Tania M. and Chen, Hao-Lin and Hill, Michael R. and Liu, Kevin K.},
abstractNote = {A laser peening process for the densification of metal surfaces and sub-layers and for changing surface chemical activities provides retardation of the up-take and penetration of atoms and molecules, particularly Hydrogen, which improves the lifetime of such laser peened metals. Penetration of hydrogen into metals initiates an embrittlement that leaves the material susceptible to cracking.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {5}
}

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Works referenced in this record:

Role of shot-peening on hydrogen embrittlement of a low-carbon steel and a 304 stainless steel
journal, January 1991