Titanium alloy nanosecond vs. femtosecond laser marking

Rusu, Stefan; Buzaianu, Aurelian; Ionel, L.; Ursescu, D.; Găluşcă, Dan Gelu

doi:10.1016/j.apsusc.2012.07.039

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…8,23 However, it is hard to generate microcracks and recast layer by femtosecond laser polishing, due to the weak thermal stress and residual stress on TC4 surface. 24 Although the mechanism of less surface defects observed on TC4 surface polished by femtosecond laser is still not quite clear, some relevant factors, such as laser duration, temporal shaping, and spatial shaping, have been discussed and analyzed. 25,26 Among them, laser duration is very important one.…”

Section: Fine Tc4 Surface After Femtosecond Laser Polishingmentioning

confidence: 99%

Influence of energy fluence and overlapping rate of femtosecond laser on surface roughness of Ti-6Al-4V

et al. 2019

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The Ti-6Al-4V polished by femtosecond laser processing is first investigated. The surface nanoparticles of Ti-6Al-4V induced by femtosecond laser have been characterized by scanning electron microscopy and energy dispersive spectrometry, and the influence of laser fluence and the overlapping rate of laser beam on surface roughness have also been analyzed. Moreover, the relationship between the laser parameters and the surface roughness of Ti-6Al-4V has been revealed, and the fine surface roughness of Ti-6Al-4V is obtained based on the optimized femtosecond laser processing parameters.

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Section: Fine Tc4 Surface After Femtosecond Laser Polishingmentioning

confidence: 99%

Influence of energy fluence and overlapping rate of femtosecond laser on surface roughness of Ti-6Al-4V

et al. 2019

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“…Laser treatment on the surface characteristics of titanium alloys has shown substantial promise in improving the wear resistance of titanium alloys. 11–13 Li et al 14 investigated the surface properties of Ti3Al/TiAl and TiC ceramic layer formed by laser cladding of Al and TiC alloy powder on Ti6Al4V alloys. They found that the wear resistance of Al and TiC cladding layers was increased twice as much as that of the Ti6Al4V substrate due to the reinforcement of the Ti3Al/TiAl and TiC hard phases.…”

Section: Introductionmentioning

confidence: 99%

A novel evolutionary approach in modeling wear depth of laser engineering titanium coatings

Garg

Vijayaraghavan

Tai

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part B:

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In this study, a new evolutionary approach, Akaike information criterion-based multi-gene genetic programming, is proposed for formulating the functional relationship of wear depth of the laser engineering titanium coatings. The carbon nanotube-reinforced titanium coatings were fabricated with 0, 10, 15, and 20 wt% carbon nanotubes. Six main input process variables such as specimen temperature, friction coefficient, contact potential, gap, carbon nanotube reinforcement composition (%), and sliding distance were considered. The laser cladding process was performed, and a total of 21,600 samples are collected, randomly divided into 17,280 and 4320 sets, and then trained and tested in the proposed algorithm. The performance of the proposed model is compared to that of the artificial neural network model. Statistical evaluation of the models concludes that the proposed model outperformed the artificial neural network. To validate the robustness of the proposed model, sensitivity and parametric analyses are conducted, and the impact of each input variable on the wear depth is studied. Analysis reveals that carbon nanotube reinforcement composition (%) plays a significant role in reducing the wear depth of the laser engineering titanium coatings.

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“…Experimental results showed the pulsed CO2 laser marking system did not cause damage to the bottom of the eggshell and the heat affect zone (HAZ) did not affect the egg theca. Rusu et al [5] analyzed the effects of nanosecond vs. femtosecond laser marking on the titanium alloy. In this research 1cm parallel lines marked were analyzed using SEM, EDX and XRD.…”

Section: Introductionmentioning

confidence: 99%

Study of Effect of Laser Marking Data Matrix Symbols on Titanium Alloy Sheets Using Nd:YAG Laser

2014

AMR

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Laser direct-part marking is finding increasing use in the tracking of products as they pass through a manufacturing process. But too high heat input of the laser may cause deformation of the product beyond the limit of the drawing. In order to investigate the effect of laser marked Data Matrix symbol on titanium alloy, a Q-switched lamp pumped Nd:YAG laser was used in this research. Two Data Matrix symbols using 16A and 28A of electric current were marked respectively in the center of two titanium alloy sheets with 50mm length and 50mm width and 2mm thickness. To analyze the quality of the laser marking, environmental scanning electron microscope (ESEM) and X-ray diffractometer (XRD) were used. Experimental results showed the HAN’S Q-switched lamp pumped Nd:YAG laser marking system did not cause damage to the titanium alloy.

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Titanium alloy nanosecond vs. femtosecond laser marking

Cited by 8 publications

References 7 publications

Influence of energy fluence and overlapping rate of femtosecond laser on surface roughness of Ti-6Al-4V

Influence of energy fluence and overlapping rate of femtosecond laser on surface roughness of Ti-6Al-4V

A novel evolutionary approach in modeling wear depth of laser engineering titanium coatings

Study of Effect of Laser Marking Data Matrix Symbols on Titanium Alloy Sheets Using Nd:YAG Laser

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