Fabrication and characterization of micro dent arrays by laser shock peening on Ti-6AL-4V surfaces

R. Caslaru, Y. B. Guo, M. P. Sealy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Surface micro dents may act as lubricant reservoirs to reduce friction and wear in sliding and rolling contact applications. Surface patterning has become a valuable technique for fabricating micro dents. Alternative methods such as micromachining present obvious limitations in comparison with laser shock peening (LSP). In this paper, the use of LSP along with an automatic X-Y table proves to be an attractive and reliable method for producing micro dent arrays with enhanced surface integrity and free of cracks. Surface topography, residual stress, and microhardness of the fabricated micro dent arrays on polished Ti-6Al-4V have been characterized. It has shown that LSP is capable of efficiently fabricating mass micro dent arrays with controllable size. The center area of the peened dents has highest hardness. In addition, high compressive residual stress can also be created.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME International Manufacturing Science and Engineering Conference 2009, MSEC2009
Pages841-844
Number of pages4
DOIs
StatePublished - 2009
EventASME International Manufacturing Science and Engineering Conference 2009, MSEC2009 - West Lafayette, IN, United States
Duration: Oct 4 2009Oct 7 2009

Publication series

NameProceedings of the ASME International Manufacturing Science and Engineering Conference 2009, MSEC2009
Volume1

Conference

ConferenceASME International Manufacturing Science and Engineering Conference 2009, MSEC2009
CountryUnited States
CityWest Lafayette, IN
Period10/4/0910/7/09

Keywords

  • Laser shock peening
  • Surface integrity
  • Surface patterning

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering

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  • Cite this

    Caslaru, R., Guo, Y. B., & Sealy, M. P. (2009). Fabrication and characterization of micro dent arrays by laser shock peening on Ti-6AL-4V surfaces. In Proceedings of the ASME International Manufacturing Science and Engineering Conference 2009, MSEC2009 (pp. 841-844). (Proceedings of the ASME International Manufacturing Science and Engineering Conference 2009, MSEC2009; Vol. 1). https://doi.org/10.1115/MSEC2009-84235