Tribological Wear Analysis of Laser Surface Treated Ti6Al4V Based on Volume Lost Evaluation

Salguero, Jorge; Salguero, Jorge; Botana, Francisco; Gómez-Parra, Álvaro; Fernández-Vidal, S.R.; Bárcena, Mariano Marcos

doi:10.4028/www.scientific.net/kem.615.82

Cited by 6 publications

(6 citation statements)

References 11 publications

(12 reference statements)

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“…Furthermore, the ability to maintain control over the wetting properties of a surface can produce benefits regarding the biocompatibility and biomechanical behavior of materials in relation to its cellular adhesion, or improving the sliding features under biological fluids situations in medical prostheses [9][10][11][12][13]. In the case of strategic material alloys for the aerospace industry and biomechanical applications such as Ti6Al4V titanium alloy, surface modification treatments and evaluations are used to overcome material limitations and improve the functional performance of the alloy [9,12,[14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…Although there are a wide range of modification treatments by chemical and mechanical procedures to adapt the surface to specific conditions, some treatments such as knurling can generate mechanical stress, and in other cases surface contamination, or result in variations of the properties in the inner layers of the alloy. In this aspect, surface texturing treatments using laser techniques allow the generation of topographies with microgeometry, and properties that are adapted to specific working conditions, without affecting the deeper layers of the material [14,[16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Laser Microtexturing on the Wetting Behavior of Ti6Al4V Alloy

Salguero

Mayuet³

et al. 2018

Coatings

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Surface modification procedures by laser techniques allow the generation of specific topographies and microstructures that enable the adaptation of the external layers of materials for specific applications. In laser texturing processes, it is possible to maintain control over the microgeometry and dimensions of the surface pattern through varying the processing parameters. One of the main areas of interest in the field of surface modification treatments is the ability to generate topographies that are associated with specific surface finishes, in terms of roughness, that can improve the manufactured part's functional capabilities. In this aspect, several types of phenomena have been detected, such as the friction and sliding wear behavior or wetting capacity, which maintain a high dependence on surface roughness. In this research, surface texturing treatments have been developed by laser techniques through using the scanning speed of the beam (V s) as a control parameter in order to generate samples that have topographies with different natures. Through assessments of surface finish using specialized techniques, the dimensional and geometrical features of the texturized tracks have been characterized, analyzing their influence on the wetting behavior of the irradiated layer. In this way, more defined texturing grooves has been developed by increasing the V s , which also improves the hydrophobic characteristics of the treated surface. However, due to the lack of uniformity in the solidification process of the irradiated area, some deviations from the expected trends and singular points can be observed. Using the contact angle method to evaluate the wetting behavior of the applied treatments found increases in the contact angle values for high texturing speeds, finding a maximum value of 65.59 • for V s = 200 mm/s.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Laser Microtexturing on the Wetting Behavior of Ti6Al4V Alloy

Salguero

Mayuet³

et al. 2018

Coatings

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“…Based on laser surface treatments, a large number of studies are focused on improving the tribological properties of titanium alloys, induced by limitations and poor material behavior in friction sliding conditions [22,23].…”

Section: Introductionmentioning

confidence: 99%

Effects of Laser Processing Parameters on Texturized Layer Development and Surface Features of Ti6Al4V Alloy Samples

Salguero

Batista

et al. 2017

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Surface engineering is widely used in different areas, such as the aerospace industry or the biomechanical and medical fields. Specifically, laser surface modification techniques may obtain specific surface finishes for special applications. In texturing laser procedures, the control of processing parameters has a great influence on the geometry and characteristics of the treated area. When these processes are carried out on titanium alloys, thin oxide layers are usually developed on the irradiated surface, formed through the thermochemical combination of vaporized material with atmospheric oxygen in the air. In thermal oxidation treatments of Ti6Al4V, the highest concentration of oxides is mainly composed by rutile (TiO 2 ), producing surface property modifications such as hardness, among others. In this research, a thermochemical oxidation of Ti6Al4V alloy has been performed through laser texturing, using laser scanning speed (V s ) and pulse rate (f ) as process control variables, and its influence on the beam absorption capacity of the modified layer have been analyzed. Combined evaluations of microgeometrical features and mechanical properties, such as hardness, verified that, by means of laser texturing treatments, the ability to generate specific topographies and increase the initial hardness of the alloy is obtained. The most advantageous results for the increase of hardness by thermochemical oxidation have been detected in low scan speeds of laser beam treatments, resulting in an increase of approximately 270% using a scanning speed of 10 mm/s. On the other hand, a dependence between roughness values, in terms of R a and R z , and the energy density of pulse (E d ) has been observed, showing higher values of roughness for a 17.68 J/cm 2 energy density of pulse.

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“…In the healthcare sector, the biocompatibility and biomechanical behavior are key factors, as well as the improvement of the sliding features under biological fluids [7,8]. In the case of strategic alloys for the aerospace industry, surface modification treatments are used to overcome material limitations and to improve functional performance [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Nanosecond Pulsed Laser Irradiation of Titanium Alloy Substrate: Effects of Periodic Patterned Topography on the Optical Properties of Colorizing Surfaces

2019

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Most of the current works based on surface treatments of metals by laser marking technology are focused on the modification of the color tonality of flat surfaces, or the development of specific topography features, but the combination of both processes is not usually evaluated, mainly due to the complexity of controlling the optical properties on rough surfaces. This research presents an analysis of the influence of the micro-geometrical characteristics of periodic patterned laser tracks on the chromaticity and reflectance of Ti6Al4V substrates. The samples were irradiated with an infrared nanosecond pulsed laser in air atmosphere, taking as the control parameter the scan speed of the beam. A roughness evaluation, microscopic inspection, and absorption and chromaticity examination were conducted. Although micro-crack growth was detected in an isolated case (10 mm/s), the possibility of adjusting the result color was demonstrated by controlling the heat-affected zone thickness of the textures. The results of rough/colored combined textures allow new perspectives in industrial design to open, particularly in aesthetic applications with special properties.

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Tribological Wear Analysis of Laser Surface Treated Ti6Al4V Based on Volume Lost Evaluation

Cited by 6 publications

References 11 publications

Effects of Laser Microtexturing on the Wetting Behavior of Ti6Al4V Alloy

Effects of Laser Microtexturing on the Wetting Behavior of Ti6Al4V Alloy

Effects of Laser Processing Parameters on Texturized Layer Development and Surface Features of Ti6Al4V Alloy Samples

Nanosecond Pulsed Laser Irradiation of Titanium Alloy Substrate: Effects of Periodic Patterned Topography on the Optical Properties of Colorizing Surfaces

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