Dry sliding wear mechanisms of the Ti6Al4V alloy

Molinari, A.; Straffelini, Giovanni; Tesi, B.; Bacci, T.

doi:10.1016/s0043-1648(96)07454-6

Cited by 415 publications

(197 citation statements)

References 16 publications

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“…Figure 11a,b reveal the SEM images of the wear debris and the wear track of the 0.5 mm sample respectively. The indication of the transfer layers and oxide particles in Figure 11a and the surface cracks that are perpendicular to the sliding direction in Figure 11b give a valuable insight into the wear mechanism of Ti64, which is consistent with the global wear rate proposed by Al Molinari et al [16]. Nevertheless, a simple calculation of the theoretical delamination wear rate using the sample's respective average hardness value obtained from the earlier Vickers hardness measurement as shown in Table 1, even without consideration of oxidative wear, revealed a higher wear rate as compared to the experimental obtained global wear rate value by two factors.…”

Section: Dry Sliding Wear Behavioursupporting

confidence: 86%

“…This, consequently, results in a lower specific wear rate but a high mean COF. The global wear rate (W global ) of a Ti64 sample can be depicted by the combination of oxidative wear (W oxidative ) and delamination wear (W delamination ) and is given by [16,26,27]:…”

Section: Dry Sliding Wear Behaviourmentioning

confidence: 99%

“…This may be owning to the formation of a tribo-layer that avoids the direct metal-metal contact between the asperities of the steel ball and the asperities of the Ti64 sample, thereby preventing further wear through sliding. The global wear rate (Wglobal) of a Ti64 sample can be depicted by the combination of oxidative wear (Woxidative) and delamination wear (Wdelamination) and is given by [16,26,27]:…”

Section: Dry Sliding Wear Behaviourmentioning

confidence: 99%

“…However, there are still very limited studies involved in their wear properties that are critical for some specific applications under wear and friction conditions [14]. As known, Ti64 possesses poor wear resistance under dry sliding due to low protection exerted by tribo-oxides formed at the surface [15,16]. Therefore, it is imperative to study on wear behavior of AM Ti64 parts and know their wear properties in comparison with the counterparts manufactured via conventional methods.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Wear Properties of Electron Beam Melted Ti-6Al-4V Parts: A Comparison Study against As-Cast Form

Toh

Wang

Tan

et al. 2016

Metals

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Ti-6Al-4V (Ti64) parts of varying thicknesses were additively manufactured (AM) by the powder-bed-based electron beam melting (EBM) technique. Microstructure and wear properties of these EBM-built Ti-6Al-4V parts have been investigated in comparison with conventionally cast Ti64 samples. Sliding wear tests were conducted using a ball-on-disc micro-tribometer under ambient conditions. Experimental results reveal that EBM-built Ti64 samples exhibited higher microhardness and an overall larger coefficient of friction as compared to the as-cast counterpart. Of interest is that the corresponding specific wear volumes were lower for EBM-built Ti64 samples, while the as-cast Ti64 showed the poorest wear resistance despite its lower coefficient of friction. Wear mechanisms were provided in terms of quantitative microstructural characterization and detailed analysis on coefficient of friction (COF) curves.

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Section: Dry Sliding Wear Behavioursupporting

confidence: 86%

Section: Dry Sliding Wear Behaviourmentioning

confidence: 99%

Section: Dry Sliding Wear Behaviourmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microstructure and Wear Properties of Electron Beam Melted Ti-6Al-4V Parts: A Comparison Study against As-Cast Form

Toh

Wang

Tan

et al. 2016

Metals

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“…However, titanium alloys as well as pure titanium are known for their notoriously poor tribological properties, which may limit their applicability particularly in areas involving friction and wear [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Dry Sliding Tribological Behavior of TC11 Titanium Alloy Subjected to the Ultrasonic Impacting and Rolling Process

Zhao

Xue

Liu

2017

Metals

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Abstract:The dry sliding friction and wear behaviors of TC11 titanium alloy subjected to the ultrasonic impacting and rolling process (UIRP) were studied in the present work. The microstructure of the deformation layer and the morphology of the worn surfaces were observed. The results clearly show that the wear performance of TC11 alloy after UIRP is better than that of TC11 alloy before UIRP under the same testing conditions. This can be attributed to the gradient nanostructure, work hardening, and low surface roughness of the treated surface layer. For the untreated samples, wear resistance first decreases and then increases with the increase of the sliding speed. Both the friction coefficient (FC) and wear rate reach a maximum value at a sliding speed of 478 r/min, and the corresponding worn surface is the most serious. While for UIRP treated samples, better friction and wear behaviors are obtained at a sliding speed of 478 r/min. This is because the deformation layer plays a protective role against wear.

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Laser Assisted Nitriding of Ti-6Al-4V Alloy: Metallurgical and Electrochemical Properties

Yilbaş

Khalid

Shuja³

1999

Chem. Eng. Technol.

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The surface properties of Ti-6Al-4Valloy, such as wear resistance, are inadequate for many applications. To improve the surface properties of the alloy, many techniques have been considered. One of the promising techniques is to form a nitride layer on the surface of the workpiece by a laser beam. In the present study, laser assisted nitriding of the Ti-6Al-4Valloy surface is carried out under a nitrogen gas flow environment. A CO 2 laser is used to irradiate the Ti-6Al-4Valloy surface while nitrogen is introduced co-axially with the laser beam onto the workpiece surface. The resulting surface cross section is examined metallurgically. SEM and XRD were carried out for material characterization. The study is extended to include the electrochemical response of the resulting surfaces. The surface morphology of the electrochemically treated workpieces are examined. It is found that in the laser treated region dendritic structures occur and TiN forms in the surface vicinity. The density of pit formation at the surface of the treated region reduces considerably.

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Dry sliding wear mechanisms of the Ti6Al4V alloy

Cited by 415 publications

References 16 publications

Microstructure and Wear Properties of Electron Beam Melted Ti-6Al-4V Parts: A Comparison Study against As-Cast Form

Microstructure and Wear Properties of Electron Beam Melted Ti-6Al-4V Parts: A Comparison Study against As-Cast Form

Dry Sliding Tribological Behavior of TC11 Titanium Alloy Subjected to the Ultrasonic Impacting and Rolling Process

Laser Assisted Nitriding of Ti-6Al-4V Alloy: Metallurgical and Electrochemical Properties

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