Tribological Behaviour of Graphite-Reinforced FeNiCrCuMo High-Entropy Alloy Self-Lubricating Composites for Aircraft Braking Energy Applications

Prabhu, T. Ram; Arivarasu, M.; Chodancar, Yash; Arivazhagan, N.; Sumanth, G.; Mishra, R. K.

doi:10.1007/s11249-019-1193-4

Cited by 28 publications

(8 citation statements)

References 35 publications

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“…The greater the indentation depth of the abrasive, the greater the µ, which is similar to the friction results for austenitic stainless steels [41]. This is mainly because, during the sliding process, the increase in the indentation depth makes the number of atoms in contact between the abrasive and the workpiece atoms increase, the µ increases; The velocity of sliding does not have a significant impact on the F x , F z and µ, Prabhu et al [42] found that the effect of velocity on µ in FeNiCrCuMo was also negligible.…”

Section: The Influence Of Friction Parameters On the Friction Propert...supporting

confidence: 68%

“…Phase changes occurred during the sliding process, and in this study, OVITO was used to analyze the structure of each phase of the workpiece [41,42]. Figure 9 shows the atomic number of various phase structures in the workpiece after sliding with different parameters, Some atoms of the workpiece undergo structural phase changes from face-centered cubic to hexagonal close packed (HCP) and body-centered cubic (BCC) under the sliding action of the abrasives, with a higher number of atoms in the HCP.…”

Section: Effect Of Sliding Parameters On Ssd To Stainless Steelmentioning

confidence: 99%

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Study on the microscopic wear mechanism of nanoparticles sliding stainless steel

Sun

Yuan

Zheng

et al. 2023

Modelling Simul. Mater. Sci. Eng.

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In order to reveal the nanoscale friction behaviour and wear mechanism of 304 stainless steel during nano particles sliding, this study investigated the effects of sliding velocity and depth on the surface morphology, temperature, mechanical forces, coefficient of friction and sub-surface damage (SSD) of stainless steel by employing molecular dynamics simulations. The results demonstrate that the atoms symmetrically stack on both sides of the sliding grooves during the sliding process. Sliding friction, friction coefficient, defective atoms, phase changing degree and the length of dislocation line increases as the indentation depth of the abrasives, while sliding velocity had little impact on them. Temperature in sliding area and the squeezing effect distinctly increases with the indentation depth the abrasives, which leads more serious damage on the surface of workpiece. The damage layer with a sliding depth of 20 Å can reach about 57.2 Å at a sliding velocity of 100m/s, and it has a maximum value of 41.1 Å at a sliding distance of 50 Å. However, increasing sliding velocity can decline the surface SSD layer, which was at a sliding depth of 20 Å. The microscopic atoms evolution presented in the study uncovers the nano-sliding wear mechanism of stainless steel.

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Section: The Influence Of Friction Parameters On the Friction Propert...supporting

confidence: 68%

Section: Effect Of Sliding Parameters On Ssd To Stainless Steelmentioning

confidence: 99%

Study on the microscopic wear mechanism of nanoparticles sliding stainless steel

Sun

Yuan

Zheng

et al. 2023

Modelling Simul. Mater. Sci. Eng.

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“…A graphite‐reinforced FeNiCrCuMo HEA was fabricated by Prabhu et al through powder metallurgy. [ 105 ] The EDS analysis confirmed that the graphite was uniformly distributed in FeNiCrCuMo matrix. The graphite remained on the wear track after tribological test, indicating that the graphite was not decomposed from the heat generated by friction and provided the self‐lubrication effect in braking test.…”

Section: The Tribological Performances Of Heas Under Dry Environmentmentioning

confidence: 90%

A Review on the Tribological Performances of High‐Entropy Alloys

Chen

Zhu

2022

Adv Eng Mater

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Wear is an important form of material loss and failure, and it is usually inevitable in almost all mechanical systems with moving parts. The durability and reliability of engineering components are closely related to their wear resistance. Developing advanced materials to alleviate energy and materials losses in moving mechanical systems still remains a great challenge nowadays. The emergence of novel high‐entropy alloys (HEAs) that compose of multiple principal elements holds great promise for the development of materials with extraordinary wear resistance, due to their high hardness, high wear resistance, and excellent corrosion resistance. Herein, the current research progress of the tribology of HEAs under different conditions is reviewed, including high temperature, dry condition, corrosion solution, and oil lubrication. Specifically, the effects of compositions, microstructures, lubricants, and protective oxide layers on the tribological performance of HEAs are summarized. Furthermore, the underlying mechanisms that are responsible for the excellent wear resistance of HEAs under different conditions are discussed. Finally, the current challenges and the future outlooks are emphasized and addressed systematically. In view of the excellent tribological performances and the diversity of compositional design, HEAs have great potential to be applied in a wide range of mechanical systems to minimize wear.

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“…The mechanical properties of HEAs such as strength, elongation, and hardness have been well-researched. However, studies concerned with the high-temperature tribological properties are limited (Alvi and Akhtar, 2019;Chen et al, 2019;Du et al, 2019;Joseph et al, 2019;Liu et al, 2019;Prabhu et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Tribological Behavior of Al0.3Cr0.5Fe1.5Mn0.5Ni High-Entropy Alloys With Addition of Titanium and Carbon

et al. 2022

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In this study, the Al0.3Cr0.5Fe1.5Mn0.5Ni high-entropy alloys (HEAs) with addition of titanium and carbon was prepared. The as-cast alloys were composed of FCC solid solution and TiC particles, and were further aged and strengthened by precipitation of B2-NiAl phase at 700°C for 10 h to increase hardness from Hv 200 to Hv 400. Tribological properties of the HEAs and commercial tool steel (AISI M2) against Al2O3 under dry sliding condition at room-temperature and elevated temperatures are compared. After high-temperature wear testing, the HEAs demonstrated exceptional oxidation resistance and a lower friction coefficient than M2 steel since the dense glazed layer on the surface of the HEAs served as a lubricant to decrease the friction coefficient, and protected the substrate from oxidation.

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Tribological Behaviour of Graphite-Reinforced FeNiCrCuMo High-Entropy Alloy Self-Lubricating Composites for Aircraft Braking Energy Applications

Cited by 28 publications

References 35 publications

Study on the microscopic wear mechanism of nanoparticles sliding stainless steel

Study on the microscopic wear mechanism of nanoparticles sliding stainless steel

A Review on the Tribological Performances of High‐Entropy Alloys

High-Temperature Tribological Behavior of Al0.3Cr0.5Fe1.5Mn0.5Ni High-Entropy Alloys With Addition of Titanium and Carbon

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