Effects of Laser Remelting at Cryogenic Conditions on Microstructure and Wear Resistance of the Ti6Al4V Alloy Applied in Medicine

Zieliński, Andrzej; Jażdżewska, Magdalena; Łubiński, Jacek; Serbiński, W.

doi:10.4028/www.scientific.net/ssp.183.215

Cited by 9 publications

(7 citation statements)

References 30 publications

(39 reference statements)

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“…Tests were carried out using CO 2 laser, varying the power and scan speed [25]. Zielińskia et al [26] created a cryogenic environment by dipping in a liquid nitrogen bath. They discovered, on measuring Vickers hardness of different sections, that a 1.5 mm thick transformed surface layer had constituents that deviated from those of the base metal.…”

Section: Impact Of Cryogenic Environmentmentioning

confidence: 99%

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Enhancing the Properties of Ti6Al4V as a Biomedical Material: A Review

Annamalai¹,

Kavitha²,

Ramji³

2014

TOMSJ

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Abstract:The alloy Ti 6 Al 4 V has evolved as a good biomedical material, by virtue of its bio-compatibility. In order to make implants out of this material, it has to be shaped and processed. Shaping this material by conventional manufacturing methods like machining, welding and brazing presents a huge challenge. This challenge has been met by various approaches like additive manufacturing, surface alloying and heat treatment. Additive manufacturing processes are used for shaping; coatings and surface alloying are used for property improvement; heat treatment is used for improving the machinability. The processing method has an impact on the final properties of the product. This review attempts to trace the development of methods and practices for converting Ti 6 Al 4 V into a useful material for biomedical applications.

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Section: Impact Of Cryogenic Environmentmentioning

confidence: 99%

“…[21,22] Improved surface hardness Cryogenic treatment on porous parts. [25,26] of the material as well as making sure the mating surfaces have proper tolerance values, prevent degradation of hip implants.…”

Section: Property Studied Approach Referencementioning

confidence: 99%

Enhancing the Properties of Ti6Al4V as a Biomedical Material: A Review

Annamalai¹,

Kavitha²,

Ramji³

2014

TOMSJ

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“…Titanium alloys have an advantage over pure titanium in that alloying elements reduce the value of Young's modulus, making it similar to that of human bone [1,3,4]. Titanium alloys are light materials and have good strength properties [5]. The tissue engineering is based on Ti6AlV, Ti6Al7Nb, and Ti13Nb13Zr [6].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Laser Surface-Treated Ti13Nb13Zr Alloy with MWCNTs Coatings

Majkowska-Marzec

Sypniewska

2021

Advances in Materials Science

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Laser surface modification of titanium alloys is one of the main methods of improving the properties of titanium alloys used in implantology. This study investigates the microstructural morphology of a laser-modified surface layer on a Ti13Nb13Zr alloy with and without a carbon nanotube coating deposited by electrophoretic deposition. Laser modification was performed for samples with and without carbon nanotube coating for two different laser powers of 800 W and 900 W and for different scan rates: 3 mm/s or 6 mm/s at 25 Hz, and the pulse duration was 2.25 ms or 3.25 ms. A scanning electron microscope SEM was used to evaluate the surface structure of the modified samples. To observe the heat-affected zones of the individual samples, metallographic samples were taken and observed under an optical microscope. Surface wettability tests were performed using a goniometer. A surface roughness test using a profilograph and a nanoindentation test by NanoTest™ Vantage was also performed. Observations of the microstructure allowed to state that for higher laser powers the surfaces of the samples are more homogeneous without defects, while for lower laser powers the path of the laser beam is clearer and more regular. Examination of the microstructure of the cross-sections indicated that the samples on which the carbon nanotube coating was deposited are characterized by a wider heat affected zone, and for the samples modified at 800 W and a feed rate of 3 mm/s the widest heat affected zone is observed. The wettability tests revealed that all the samples exhibit hydrophilic surfaces and the samples with deposited carbon nanotube coating increase it further. Surface roughness testing showed a significant increase in Ra for the laser-modified samples, and the presence of carbon nanotubes further increased this value. Nanoindentation studies showed that the laser modification and the presence of carbon coating improved the mechanical properties of the samples due to their strength.

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“…The novelty in our research was an use of pulse laser as the continuous work laser would cause the appearance of surface cracks, as shown for the Ti6Al4V alloy [15,16]. It was assumed that by such precise laser treatment was assumed to it becomes possible to create micro and nanorough surface, and the thin HAp -to perfectly modelise the surface roughness enhancing the osseointegration of the implant and the tissue.…”

Section: Introductionmentioning

confidence: 99%

Hydroxyapatite deposition on the laser modified Ti13Nb13Zr alloy

Jażdżewska

Majkowska-Marzec

2017

Advances in Materials Science

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The Ti13Nb13Zr alloy was subjected to laser modification with the Nd:YAG laser provided that such treatment would increase the surface roughness followed improved adhesion of hydroxyapatite (HAp) coatings The hydroxyapatite was deposited by electrophoretic method in suspension of 0.5 g HA powder and 100 ml ethyl alcohol. The deposition was carried out for 10 min at 10 V voltage followed by drying at room temperature for 24 h and heating at 800°C for 1 h in vacuum. The thickness of the HAp coatings was found as of about 4.06 µm to 9.05 µm. The examinations of surfaces were carried out at each stage of the experiment with the ultra-high resolution scanning electron microscope. The measurements of surface roughness after laser treatment and after HAp deposition were performed with the Hommel Etamic Waveline profilograph.

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Effects of Laser Remelting at Cryogenic Conditions on Microstructure and Wear Resistance of the Ti6Al4V Alloy Applied in Medicine

Cited by 9 publications

References 30 publications

Enhancing the Properties of Ti6Al4V as a Biomedical Material: A Review

Enhancing the Properties of Ti6Al4V as a Biomedical Material: A Review

Microstructure and Mechanical Properties of Laser Surface-Treated Ti13Nb13Zr Alloy with MWCNTs Coatings

Hydroxyapatite deposition on the laser modified Ti13Nb13Zr alloy

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