Impact of contact size and complex gross–partial slip conditions on Ti–6Al–4V/Ti–6Al–4V fretting wear

Fouvry, S.; Paulin, C.; Deyber, S.

doi:10.1016/j.triboint.2008.08.005

Cited by 79 publications

(56 citation statements)

References 19 publications

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“…As found in previous research in the area [7,[17][18][19], wear during fretting of more-conforming contacts (tests using 160 mm radius cylindrical specimens) is found to be much lower than that observed in less-conforming contacts at all fretting frequencies examined. As the applied load is the same for both of the contact radii employed, the contact pressure is thus lower for the moreconforming contacts.…”

Section: Discussion (A) Less-conforming Contactssupporting

confidence: 78%

“…The result will be that the most-conforming contacts will have larger wear scar areas than those observed in the less-conforming contacts, but that the scars in the mostconforming contacts will be shallower. Accordingly, it has been argued that reductions in wear rate as the contact conformity increases are related to a reduction in the ease of debris egress from the contact and a reduction in the ease of oxygen ingress into the contact [7,17,18]. The results for tests with the more-conforming contacts ( figure 13) show that, as the fretting frequency is increased, the wear rate reduces only slightly.…”

Section: Discussion (A) Less-conforming Contactsmentioning

confidence: 99%

“…More recently, this assumption has been cast into doubt. Fouvry et al [7] and Merhej & Fouvry [17] found that, for simplified contacts (ball-on-flat and cylinder-on-flat), the wear rate decreased as the radius of curvature of the non-plane body increased. They proposed that this decrease in wear was due to the restriction of debris ejection from the contact associated with a curved body with a larger radius, with the entrapped debris protecting the contact from further wear.…”

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confidence: 99%

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Fretting wear mapping: the influence of contact geometry and frequency on debris formation and ejection for a steel-on-steel pair

2015

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This paper examines the influence of contact geometry and oscillation frequency in a steel cylinder-on-steel flat fretting contact, with contact geometry being varied via the cylinder radius. Fretting frequency did not significantly impact the wear behaviour for more-conforming contacts, but did so for less-conforming contacts where, at high frequency, the wear rate is approximately 50% of that observed for low-frequency fretting. It is proposed that frequency and contact conformity fundamentally control wear behaviour through influence of both the debris type and the retention or ejection of that debris from the contact. The debris type (either oxide or metallic) is influenced by fretting frequency (which controls the interval between asperity contacts) and by contact conformity (which controls the distance that oxygen has to travel to fully penetrate the contact). Debris retention within the contact is promoted by higher fretting frequencies (the associated higher contact temperature promotes debris agglomeration and sintering in the contact) and by higher contact conformity (which acts as a physical barrier to debris egress). Maps are presented which categorize the observed behaviour and outline a phenomenological framework by which the basic physical processes which influence fretting behaviour can be understood.

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Section: Discussion (A) Less-conforming Contactssupporting

confidence: 78%

Section: Discussion (A) Less-conforming Contactsmentioning

confidence: 99%

mentioning

confidence: 99%

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Fretting wear mapping: the influence of contact geometry and frequency on debris formation and ejection for a steel-on-steel pair

2015

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“…The data for the low cycles case is taken from another researcher [14]. Due to peak contact pressure at initial cycles the progression of scar length developed high rate of wear and it decreases when the shear stresses are distributed over the large contact surfaces [15]. Therefore the wear rate started to stabilize with increasing duration of cycles.…”

Section: Wear Scar Detailsmentioning

confidence: 99%

Characterisation of Ti-6Al-4V Reciprocating Sliding Wear Test Behaviour

Nurdin

Harun

Tobi

et al. 2015

AMM

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Abstract. Sliding contact will experience wear in majority of mechanical components during their service life where it reduces the performance of the components. The capability to predict the evolution of reciprocating wear scars, such as the scar's width and depth, would be a valuable tool when designing mechanical components. Wear scar mechanism behaviour is characterised during stabilized cycle reciprocating sliding wear test of Ti-6Al-4V investigated using pin-on-flat arrangement under variable duration of sliding. The test samples were analyzed using profilometer test, optical microscopy test, Scanning Electron Microscopy (SEM) test, Energy Depressive X-ray (EDX) test and Vickers Hardness (HV) test. Stabilised high number of cycles shows low wear rate and initiation period of low cycles produced higher wear rate.

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“…Nevertheless, the poor tribological properties caused by relatively low surface hardness and high friction coefficient have seriously hindered extensive applications of titanium alloys in many sliding components, especially where high wear resistance is required. [1][2][3] One of the most promising ways to combat this problem is the application of different hard surface modified coatings on titanium alloys. 4,5 From a tribological perspective, molybdenum silicide (MoSi 2 ) can potentially be regarded as an attractive wear resistant and antifriction surface coating material suitable for extremely harsh working conditions because of its inherent high hardness and high elastic modulus.…”

Section: Introductionmentioning

confidence: 99%

Role of Al additions in wear control of nanocrystalline Mo(Si_1−xAl_x)₂ coatings prepared by double cathode glow discharge technique

Fan

2013

Materials Science and Technology

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Four kinds of nanocrystalline Mo(Si 12x Al x ) 2 coatings with differing Al contents are prepared onto a Ti-6Al-4V substrates by a double cathode glow discharge apparatus. The microstructural features of the deposited coatings were characterised by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. These coatings are composed of the equiaxed C40-MoSi 2 grains with the average grain size of ,5 nm. Nano-indentation measurements indicated that the hardness H, elastic modulus E and the H/E or H 3 /E 2 ratio of the nanocrystalline Mo(Si 12x Al x ) 2 coatings slightly increase with the increase in Al content. The tribological behaviour of the nanocrystalline Mo(Si 12x Al x ) 2 coating sliding against a ZrO 2 ceramic ball at room temperature has been compared using a ball-on-disc type tribometer under unlubricated conditions. Experimental results showed that the specific wear rates of the nanocrystalline Mo(Si 12x Al x ) 2 coatings decrease with increasing Al content and are dramatically reduced by more than 1-2 orders of magnitude over the uncoated Ti-6A1-4V. The enhancement of wear resistance of the nanocrystalline Mo(Si 12x Al x ) 2 coatings by Al additions is correlated with the increased mechanical properties and the forming oxide layer by tribochemical reactions.

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Impact of contact size and complex gross–partial slip conditions on Ti–6Al–4V/Ti–6Al–4V fretting wear

Cited by 79 publications

References 19 publications

Fretting wear mapping: the influence of contact geometry and frequency on debris formation and ejection for a steel-on-steel pair

Fretting wear mapping: the influence of contact geometry and frequency on debris formation and ejection for a steel-on-steel pair

Characterisation of Ti-6Al-4V Reciprocating Sliding Wear Test Behaviour

Role of Al additions in wear control of nanocrystalline Mo(Si_1−xAl_x)₂ coatings prepared by double cathode glow discharge technique

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Impact of contact size and complex gross–partial slip conditions on Ti–6Al–4V/Ti–6Al–4V fretting wear

Cited by 79 publications

References 19 publications

Fretting wear mapping: the influence of contact geometry and frequency on debris formation and ejection for a steel-on-steel pair

Fretting wear mapping: the influence of contact geometry and frequency on debris formation and ejection for a steel-on-steel pair

Characterisation of Ti-6Al-4V Reciprocating Sliding Wear Test Behaviour

Role of Al additions in wear control of nanocrystalline Mo(Si1−xAlx)2 coatings prepared by double cathode glow discharge technique

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Product

Resources

About

Role of Al additions in wear control of nanocrystalline Mo(Si_1−xAl_x)₂ coatings prepared by double cathode glow discharge technique