Fretting wear of Mg–Li–Al based alloys

Sikdar, Koushik; Shekhar, Shashank; Balani, Kantesh

doi:10.1016/j.wear.2014.06.012

Cited by 50 publications

(13 citation statements)

References 22 publications

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“…Many studies have focused on the corrosion properties of magnesium [4,5], however, the tribological behavior of pure magnesium is not well understood. Improving the wear resistance of magnesium can achieve low friction and long life of friction parts [6]. Magnesium usually forms a protective oxide film under ambient condition.…”

Section: Introductionmentioning

confidence: 99%

Tribochemical Behavior of Pure Magnesium During Sliding Friction

Zhuang

Peng

Wang

et al. 2019

Metals

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Reciprocating sliding friction tests were conducted on pure magnesium using a UMT-II tester. The tribo-chemical behavior was characterized using X-ray photoelectron spectroscopy (XPS) and electron probe micro-analyzer (EPMA), which showed that the tribo-chemical behavior of pure magnesium was due to a tribo-oxidation reaction. At room temperature, the debris layer on the worn surface contained Mg(OH)2, MgO, and MgCO3. According to the reciprocating sliding friction mechanism, the decomposition of MgCO3 into MgO should occur. XPS results revealed that the surface oxide layer, containing Mg(OH)2, and MgO, acted as a third layer to protect the surface. Apparently, Mg(OH)2·nH2O was the main tribo-chemical product of pure magnesium under sliding friction.

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Section: Introductionmentioning

confidence: 99%

Tribochemical Behavior of Pure Magnesium During Sliding Friction

Zhuang

Peng

Wang

et al. 2019

Metals

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“…The shapes of friction hysteresis (tangential force F t vs relative slip amplitude δ ) remains almost a parallelogram (attached as appendix D), which shows gross slip regime as the fretting damage mechanism . The area under the hysteresis loop for all TaC‐based composites (see Table ) can be calculated by the following equation:

A = \int_{} F_{t} (D) d s

where ds is the displacement amplitude and the total area enclosed by friction hysteresis represents dissipated friction energy during each fretting cycle. This dissipation energy gets stored in the material to promote thermo‐mechanical induction, plastic flow, and delamination or may transform into heat energy, which ultimately affects the wear volume during fatigue.…”

Section: Resultsmentioning

confidence: 97%

“…The variation in the coefficient of friction (COF) for all TaC‐based composites at 10 N load against Al 2 O 3 ball increases with SiC and CNT reinforcement as presented in Figure . The initial run‐in period shows a rapid increase in the COF due to an uneven contact between the mating surfaces followed by a steady state condition after ≈1000 cycles as the dynamic equilibrium is attained between the surface (inset of Figure ). The reported values are an average of at least three experiments carried out under the same conditions for each composite.…”

Section: Resultsmentioning

confidence: 99%

“…Friction log is a 3‐D plot (attached as appendix E), correlates friction force, slip amplitude and number of cycles, which elicits the transition and steady state zones along with fretting condition among sticking, partial slip, and gross slip . During the initial running in‐period, a transition zone is witnessed, which represents the initial interaction between the surface to counter body, and later it becomes smooth as the interaction increases (see Figure ).…”

Section: Resultsmentioning

confidence: 99%

“…It is to be noted that most of the available literature on TaC‐based composites is focused only on processing and their oxidation behavior, but, no study converges on their wear behavior. Fretting may arise from increased vibration and lead to catastrophic failure of the component under service, therefore, assessment of fretting induced wear is essential for predicting the safe service life of components employed to engineering applications . The micro scratch test can be a good alternative for conventional wear test (such as sliding and fretting wear) to investigate the tribological properties of materials .…”

Section: Introductionmentioning

confidence: 99%

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Role of Interfaces on Multi‐length Scale Wear Mechanics of TaC‐based Composites

Nisar

Balani

2017

Adv Eng Mater

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In the current work, contact-mechanics at different length scale is utilized to correlate damage accumulation in TaC-based composites. Upon synergistic reinforcement with silicon carbide (SiC) and carbon nanotubes (CNTs), TaC has shown to reduce the wear rate from 10.5 Â 10 À7 to 4.1 Â 10 À7 mm 3 N À1 m À1 upon fretting (micro-wear) and from 8.0 to 2.7 mm 3 N À1 m À1 upon microscratching (meso-wear). Enhancement in the fracture toughness from 2.9 to 10.7 MPam 1/2 with reinforcement is attributed to the processing induced defects (such as dislocation, stacking fault etc.) in SiC and strong interfacial bonding of CNTs with TaC, as revealed by transmission electron microscopy (TEM). Delineation of the synergistic contribution of SiC and CNT reinforcement in TaC establishes the wear mechanism to be abrasion (via fretting test), brittle tensile cracking, and fracture (via micro-scratch test).

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The Effect of the Strain Rate on the Fretting Wear Properties of Thermally Compressed Inconel 625 Alloy

Jia

Wang

Ji³

et al. 2020

Adv Eng Mater

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The strain rate during the thermal deformation process has a decisive effect on the performance of the material. Herein, Inconel 625 alloy is subjected to thermal compression at different strain rates to obtain fretting wear samples with different microstructures. The effects of the recrystallized grain morphologies, textures, and microhardness values on the fretting wear resistance of thermally compressed Inconel 625 are studied. The results demonstrate that the thermally compressed Inconel 625 alloy underwent severe oxidation reactions during fretting wear, mainly Fe oxides. At an equal temperature, as the strain rate of thermal compression increases, the friction coefficient and wear volume are found to first decrease and then increase. When the strain rates during thermal compression are 0.1 and 1 s−1, the workpiece is in a relatively fine recrystallized grain form without texture and with high hardness. At this time, the thermally compressed Inconel 625 has a low friction coefficient, a small volume of wear, and a large number of oxides on its surface. Therefore, the thermal deformation microstructure has a great influence on the wear resistance. Improvement in the fretting wear resistance of the workpiece by adjusting the strain rate during the thermal deformation process is proposed.

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Fretting wear of Mg–Li–Al based alloys

Cited by 50 publications

References 22 publications

Tribochemical Behavior of Pure Magnesium During Sliding Friction

Tribochemical Behavior of Pure Magnesium During Sliding Friction

Role of Interfaces on Multi‐length Scale Wear Mechanics of TaC‐based Composites

The Effect of the Strain Rate on the Fretting Wear Properties of Thermally Compressed Inconel 625 Alloy

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