Surface and subsurface characterization of laser-interference structured Ti6Al4V

Jian Chen; Adrian S. Sabau; Harry Meyer; Donovan Leonard

doi:10.1016/j.apsusc.2021.149576

Surface and subsurface characterization of laser-interference structured Ti6Al4V

Jian Chen, Adrian S. Sabau, Harry Meyer, Donovan Leonard

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Ti6Al4V specimens were exposed to high-energy laser pulses of 1.24 J/cm² fluences per pulse using a two-beam optical configuration to attain laser-interference. In addition to the formation of periodic surface textures by laser-interference, scanning electron microscope (SEM) images demonstrated several microstructural changes on the surface processed. Moreover, the surface and subsurface of Ti6Al4V specimens were characterized for the as-received and laser-interference processed conditions using x-ray photoelectron spectroscopy (XPS) and electron energy dispersive spectroscopy (EDS). The XPS data showed that this laser technique is effective at removal of surface contaminants for Ti6Al4V. The XPS analysis also revealed the formation of an oxy-nitride layer on the laser treated material. The microstructure analysis indicates that grain refinement, dendrite and twin structures were found near the surface due to laser processing.

Original language	English
Article number	149576
Journal	Applied Surface Science
Volume	555
DOIs	https://doi.org/10.1016/j.apsusc.2021.149576
State	Published - Jul 30 2021

Funding

This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( http://energy.gov/downloads/doe-public-access-plan ). This research was conducted at UT-Battelle, LLC, for the project ?Laser-Interference Surface Preparation for Enhanced Coating Adhesion and Adhesive Joining of Multi-Materials.? This project, WP-2743, has been funded by the Strategic Environmental Research and Development Program (SERDP) Weapon Systems & Platforms 4800 Mark Center Drive, Suite 17D03, Alexandria, VA 22350-3605. The authors would like to thank Shirley Waters of ORNL for the SEM micrographs. The authors acknowledge the technical support from Tom Naguy, Deputy Technical Director, Air Force Materiel Command, W-P AFB; Michael Casey Jones, Materials Engineer, W-P AFB; Rick Osterman and Stan Bean of M&P Solutions LLC, Pahrump, NV. This research was conducted at UT-Battelle, LLC, for the project “Laser-Interference Surface Preparation for Enhanced Coating Adhesion and Adhesive Joining of Multi-Materials.” This project, WP-2743, has been funded by the Strategic Environmental Research and Development Program (SERDP) Weapon Systems & Platforms 4800 Mark Center Drive, Suite 17D03, Alexandria, VA 22350-3605. The authors would like to thank Shirley Waters of ORNL for the SEM micrographs. The authors acknowledge the technical support from Tom Naguy, Deputy Technical Director, Air Force Materiel Command, W-P AFB; Michael Casey Jones, Materials Engineer, W-P AFB; Rick Osterman and Stan Bean of M&P Solutions LLC, Pahrump, NV.

Funders	Funder number
Materials Engineer
Michael Casey Jones
Shirley Waters of ORNL
U.S. Department of Energy
Air Force Materiel Command
Strategic Environmental Research and Development Program	VA 22350-3605

Keywords

Laser interference
Nitridation
Surface texturing
XPS

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10.1016/j.apsusc.2021.149576

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title = "Surface and subsurface characterization of laser-interference structured Ti6Al4V",

abstract = "Ti6Al4V specimens were exposed to high-energy laser pulses of 1.24 J/cm2 fluences per pulse using a two-beam optical configuration to attain laser-interference. In addition to the formation of periodic surface textures by laser-interference, scanning electron microscope (SEM) images demonstrated several microstructural changes on the surface processed. Moreover, the surface and subsurface of Ti6Al4V specimens were characterized for the as-received and laser-interference processed conditions using x-ray photoelectron spectroscopy (XPS) and electron energy dispersive spectroscopy (EDS). The XPS data showed that this laser technique is effective at removal of surface contaminants for Ti6Al4V. The XPS analysis also revealed the formation of an oxy-nitride layer on the laser treated material. The microstructure analysis indicates that grain refinement, dendrite and twin structures were found near the surface due to laser processing.",

keywords = "Laser interference, Nitridation, Surface texturing, XPS",

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AB - Ti6Al4V specimens were exposed to high-energy laser pulses of 1.24 J/cm2 fluences per pulse using a two-beam optical configuration to attain laser-interference. In addition to the formation of periodic surface textures by laser-interference, scanning electron microscope (SEM) images demonstrated several microstructural changes on the surface processed. Moreover, the surface and subsurface of Ti6Al4V specimens were characterized for the as-received and laser-interference processed conditions using x-ray photoelectron spectroscopy (XPS) and electron energy dispersive spectroscopy (EDS). The XPS data showed that this laser technique is effective at removal of surface contaminants for Ti6Al4V. The XPS analysis also revealed the formation of an oxy-nitride layer on the laser treated material. The microstructure analysis indicates that grain refinement, dendrite and twin structures were found near the surface due to laser processing.

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Surface and subsurface characterization of laser-interference structured Ti6Al4V

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