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Effect of laser shock peening on the high temperature oxidation resistance of titanium
- Source :
- Surface and Coatings Technology, Surface and Coatings Technology, 2017, 326, pp.146-155. ⟨10.1016/j.surfcoat.2017.07.042⟩, Surface and Coatings Technology, Elsevier, 2017, 326, pp.146-155. 〈http://www.sciencedirect.com/science/article/pii/S0257897217307326〉. 〈10.1016/j.surfcoat.2017.07.042〉, Surface and Coatings Technology, Elsevier, 2017, 326, pp.146-155. ⟨10.1016/j.surfcoat.2017.07.042⟩
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- International audience; The effect of laser shock peening on the high temperature oxidation resistance of commercial pure titanium at high temperature (700 °C) was studied in long-time (3000 h) exposure under dry air. A reduction of the gain mass by a factor 4 was found for laser-shock peened (LSP) samples compared to untreated titanium, which supports the interest of laser-shock treatment for the improvement of high temperature resistance. Short-durations (10 h and 100 h) oxidation experiments, devoted to investigate the influence of the LSP treatment on the first stages of the oxidation process, were also carried out by TGA. Several techniques as scanning electron microsco-py, hardness and roughness measurements, X-ray diffraction and X-ray photoelectron spectrometry, micro-Raman spectroscopy, nuclear reaction analysis and electron backscattered diffraction were used to characterize the sample after laser treatment and oxidations. The formation of a continuous nitrogen-rich layer between the oxide layer and the α-case area in LSP samples appears to be the key factor to explain the reduction of oxygen diffusion, and thus the improvement of the oxidation resistance of laser shocked titanium. Moreover, the grain-texture of LSP samples after oxidation can also explain the improvement of the high temperature oxidation resistance after long times exposures.
- Subjects :
- Surface analysis
Matériaux [Sciences de l'ingénieur]
Materials science
Scanning electron microscope
Analytical chemistry
Oxide
chemistry.chemical_element
02 engineering and technology
Mass spectrometry
01 natural sciences
law.invention
chemistry.chemical_compound
law
Nuclear reaction analysis
0103 physical sciences
Materials Chemistry
Nitrogen insertion
Laser shock peening
Spectroscopy
010302 applied physics
Titanium
High temperature oxidation
Mécanique [Sciences de l'ingénieur]
Metallurgy
Peening
Surfaces and Interfaces
General Chemistry
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Laser
Surfaces, Coatings and Films
chemistry
[ CHIM.MATE ] Chemical Sciences/Material chemistry
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 02578972 and 18793347
- Database :
- OpenAIRE
- Journal :
- Surface and Coatings Technology, Surface and Coatings Technology, 2017, 326, pp.146-155. ⟨10.1016/j.surfcoat.2017.07.042⟩, Surface and Coatings Technology, Elsevier, 2017, 326, pp.146-155. 〈http://www.sciencedirect.com/science/article/pii/S0257897217307326〉. 〈10.1016/j.surfcoat.2017.07.042〉, Surface and Coatings Technology, Elsevier, 2017, 326, pp.146-155. ⟨10.1016/j.surfcoat.2017.07.042⟩
- Accession number :
- edsair.doi.dedup.....ed275af3e89309d95b84832740b20522