Surface modification of a Ti6Al4V alloy by thermal oxidation to improve its tribological properties

Rueda, A. K. García; Castillo, D. Guzmán; González, Leandro García; Zamora‐Peredo, L.; Hernández-Torres, J.

doi:10.1016/j.matlet.2022.132082

Cited by 10 publications

(5 citation statements)

References 10 publications

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“…Biswas et al [29] observed that the microhardness, wear, and corrosion resistance of the surface improved after the oxidation of Ti6Al4V. García Rueda et al [30] applied the oxidation process to Ti6Al4V alloy and found that its tribological properties improved.…”

Section: Introductionmentioning

confidence: 99%

Effect of Oxidation Process on Mechanical and Tribological Behaviour of Titanium Grade 5 Alloy

Saier,

Esen,

Ahlatci

et al. 2024

Materials

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In this study, microstructural characterization, mechanical (tensile and compressive) properties, and tribological (wear) properties of Titanium Grade 5 alloy after the oxidation process were examined. While it is observed that the grey contrast coloured α grains are coaxial in the microstructures, it is seen that there are black contrast coloured β grains at the grain boundaries. However, in oxidised Titanium Grade 5, it is possible to observe that the α structure becomes larger, and the number and density of the structure increases. Small-sized structures can be seen inside the growing α particles and on the β particles. These structures are predicted to be Al-Ti/Al-V secondary phases. The nonoxidised alloy matrix and the OL layer exhibited a macrolevel hardness of 335 ± 3.21 HB and 353 ± 1.62 HB, respectively. The heat treatment increased Vickers microhardness by 13% in polished and etched nonoxidised and oxidised alloys, from 309 ± 2.08 HV1 to 352 ± 1.43 HV1. The Vickers microhardness value of the oxidised sample was 528 ± 1.74 HV1, as a 50% increase was noted. According to their tensile properties, oxidised alloys showed a better result compared to nonoxidised alloys. While the peak stress in the oxidised alloy was 1028.40 MPa, in the nonoxidised alloy, this value was 1027.20 MPa. It is seen that the peak stresses of both materials are close to each other, and the result of the oxidised alloy is slightly better. When we look at the breaking strain to characterise the deformation behaviour in the materials, it is 0.084 mm/mm in the oxidised alloy; In the nonoxidised alloy, it is 0.066 mm/mm. When we look at the stress at offset yield of the two alloys, it is 694.56 MPa in the oxidised alloy; it was found to be 674.092 MPa in the nonoxidised alloy. According to their compressive test properties, the maximum compressive strength is 2164.32 MPa in the oxidised alloy; in the nonoxidised alloy, it is 1531.52 MPa. While the yield strength is 972.50 MPa in oxidised Titanium Grade 5, it was found to be 934.16 MPa in nonoxidised Titanium Grade 5. When the compressive deformation oxidised alloy is 100.01%, in the nonoxidised alloy, it is 68.50%. According to their tribological properties, the oxidised alloy provided the least weight loss after 10,000 m and had the best wear resistance. This material’s weight loss and wear coefficient at the end of 10,000 m are 0.127 ± 0.0002 g and (63.45 ± 0.15) × 10−8 g/Nm, respectively. The highest weight loss and worst wear resistance have been observed in the nonoxidised alloy. The weight loss and wear coefficients at the end of 10,000 m are 0.140 ± 0.0003 g and (69.75 ± 0.09) × 10−8 g/Nm, respectively. The oxidation process has been shown to improve the tribological properties of Titanium Grade 5 alloy.

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Section: Introductionmentioning

confidence: 99%

Effect of Oxidation Process on Mechanical and Tribological Behaviour of Titanium Grade 5 Alloy

Saier,

Esen,

Ahlatci

et al. 2024

Materials

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“…At the same time, there is an increase in the number of publications devoted to the modification of the surface properties of structural materials [8][9][10][11][12], because of which structural changes occur in them with an increase, as a rule, in hardness and microhardness, an increase in their wear resistance while the properties and structure of deeper layers remain unchanged. One of the most promising from the point of view of increasing the strength properties of the material, as well as technologically accessible and simple, are the processes of boriding [13][14][15] and nitriding [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Methods for increasing the cavitation and solid particle erosion resistance of 20GL and 30L steels based on their surface modification

Mednikov,

Tkhabisimov,

Zilova

2024

J. Phys.: Conf. Ser.

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The article presents the results of studies of cavitation and solid particle erosion resistance of samples of 20GL and 30L steels with various surface modification options based on nitriding and boriding processes. Tests for cavitation resistance were carried out according to the ASTM G134-17, and for solid particle erosion resistance - according to the ASTM G76-13. It was revealed that to increase wear resistance, the depth of modification of the considered steels should be at least 80 microns. Based on the totality of cavitation and solid particle erosion studies carried out, the best option for surface modification for 20GL steel is boriding, and for 30L steel nitriding.

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“…The titanium alloy (Ti6Al4V) is used in chemical industries, medical implants, and aerospace applications due to its special properties, such as high strength-to-weight ratio, corrosion resistance, and biocompatibility [1,2]. However, Ti6Al4V alloy has low hardness and poor wear resistance [3,4].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Al2Ti/Al3Ti-based intermetallic and Al2O3/TiO2-based oxide composite coatings fabricated on Ti6Al4V alloy

Aktuğ¹,

Acar²,

Cora³

et al. 2023

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In this work, an aerospace-grade Ti6Al4V alloy was coated by electro spark deposition (ESD), micro-arc oxidation (MAO), and combined ESD + MAO coating methods to improve mechanical properties and wear resistance. The results obtained from the coatings were compared with the bare Ti6Al4V. The phase structure, surface-cross sectional morphologies, elemental distribution, surface-cross sectional mechanical and wear properties of the bare alloy and the coatings were investigated by XRD, SEM, EDX-mapping, nanoindentation, micro--Vickers hardness, and tribometer. The XRD results revealed that the MAO and ESD + MAO duplex coatings contained rutile-TiO2 and γ-Al2O3 phases, while Al3Ti, Al2Ti, and AlTi3 phases were observed in the ESD coating. The average hardness of all coatings was significantly improved with respect to bare Ti6Al4V due to the crystalline and dense structure of the inner layer. In addition, the wear resistance of the coatings was significantly improved compared to that of bare Ti6Al4V. K e y w o r d s : micro-arc oxidation (MAO), electro spark deposition (ESD), Al2O3/TiO2 composite, mechanical properties, tribological properties

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Surface modification of a Ti6Al4V alloy by thermal oxidation to improve its tribological properties

Cited by 10 publications

References 10 publications

Effect of Oxidation Process on Mechanical and Tribological Behaviour of Titanium Grade 5 Alloy

Effect of Oxidation Process on Mechanical and Tribological Behaviour of Titanium Grade 5 Alloy

Methods for increasing the cavitation and solid particle erosion resistance of 20GL and 30L steels based on their surface modification

Characterization of Al2Ti/Al3Ti-based intermetallic and Al2O3/TiO2-based oxide composite coatings fabricated on Ti6Al4V alloy

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