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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Ali, M. A. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Shen, Xiaojun
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Publications (7/7 displayed)
- 2020On restructuring the microstructure of Ti-6Al-7Nb alloy before surface engineeringcitations
- 2019Altering the wetting properties of orthopaedic titanium alloy (Ti–6Al–7Nb) using laser shock peeningcitations
- 2018Laser cleaning of grey cast iron automotive brake disc
- 2017Effect of Laser Shock Peening (LSP) on the Microstructure, Residual Stress State and Hardness of a Nickel based Superalloy
- 2017Improvement in mechanical properties of titanium alloy (Ti-6Al-7Nb) subject to multiple laser shock peeningcitations
- 2017Corrigendum to “Surface property modifications of silicon carbide ceramic following laser shock peening” [J. Eur. Ceram. Soc. 37 (9) (2017) 3027–3038]
- 2017Surface property modifications of silicon carbide ceramic following laser shock peeningcitations
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article
Surface property modifications of silicon carbide ceramic following laser shock peening
Abstract
This paper is focused on Laser shock peening (LSP) of silicon carbide (SiC) advanced ceramic. A comprehensive study was undertaken using a pulsed Nd:YAG laser. Surface modifications were investigated, particularly: the roughness, hardness, fracture toughness, microstructure, phase transformation and residual stress induced before and after the LSP surface treatment. The findings showed increase in the surface roughness, changes to the surface morphology, improved hardness, and a reduction in the fracture lengths. The LSP surface treatment also improved the surface fracture toughness from an average of 2.32 MPa m<sup>1/2</sup> to an average of 3.29 MPa m<sup>1/2</sup>. This was attributed to the surface integrity and the induced compressive residual stress as a maximum of −92 MPa was measured compared to an average of +101 MPa on the as-received SiC. A slight change in the surface chemistry was also observed from the XPS spectra, however, no real phase transformation was seen from the X-ray diffraction analysis. Laser energy density of around 1.057 J/cm<sup>2</sup>, 8.5 mm spot size, 10 Hz pulse repetition rate (PRR) at 6ns pulse duration, and 1064 nm wavelength resulted to obtaining a crack-free surface treatment and demonstrated that the technique is also beneficial to enhance some of the properties to strengthen brittle ceramics such as SiC