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

Oak Ridge National Laboratory

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

Bibliographical note

Publisher Copyright:
© 2021 Elsevier B.V.

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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T1 - Surface and subsurface characterization of laser-interference structured Ti6Al4V

AU - Chen, Jian

AU - Sabau, Adrian S.

AU - Meyer, Harry

AU - Leonard, Donovan

PY - 2021/7/30

Y1 - 2021/7/30

N2 - 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.

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.

KW - Laser interference

KW - Nitridation

KW - Surface texturing

KW - XPS

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VL - 555

JO - Applied Surface Science

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Surface and subsurface characterization of laser-interference structured Ti6Al4V

Abstract

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Keywords

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