Friction mechanism in the running-in stage of copper: From plastic deformation to delamination and oxidation

Cao, He; Zhou, Xinzhe; Li, X.Y.; Lu, K.

doi:10.1016/j.triboint.2017.05.027

Cited by 49 publications

(14 citation statements)

References 10 publications

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“…For steel-on-steel sliding contacts, especially under dry sliding conditions, the deformation and microstructure evolution are of great significance to the tribological behavior of a tribosystem. Those evolutions of subsurface microstructure are crucial in determining the material removal processes [ 4 , 5 , 6 ]. Additionally, the microhardness and microstructure of sliding pairs seriously affect the tribology behavior [ 7 , 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Tribological Behavior of the 316L Stainless Steel with Heterogeneous Lamella Structure

Qin

Kang

et al. 2018

Materials

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In this paper, the tribological behavior of 316L stainless steel with heterogeneous lamella structure (HLS), prepared through 85% cold rolling technology and subsequent annealing treatment (750 °C, 10 min), were conducted on a ball-on-disc tribometer under different normal loads in dry ambient air conditions. The morphologies, structures, and compositions of the raw and worn surfaces were analyzed by 3D surface profilometer, XRD, SEM, EDS and TEM. Based on this, the results showed that the HLS 316L stainless steel samples exhibited lower and more steady friction coefficients than coarse-grained samples, especially under higher loads, which can be attributed to the existence of numerous oxidative particles across sliding interfaces. However, the wear resistance of HLS 316L stainless steel sample was a little weakened compared to that of the coarse-grained sample under a normal load of 5 N. When the load increases up to 15 N, an obviously decreased wear resistance was found for the HLS of the 316L stainless steel sample, which was 50% lower than that of coarse-grained sample. This can be ascribed to the more severe oxidative and abrasive wear performance of HLS 316L stainless steel sample under dry sliding conditions.

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Section: Introductionmentioning

confidence: 99%

Tribological Behavior of the 316L Stainless Steel with Heterogeneous Lamella Structure

Qin

Kang

et al. 2018

Materials

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“…The evolution of the microstructure at a metal surface under shear stress controls its frictional response, and this has recently been the subject of a great deal of research [35][36][37][38][39][40][41][42][43][44][45]. Normal and shear stresses in the contact zone affect the size of surface grains, which in turn influences the friction and stress distribution in this region [41].…”

Section: Introductionmentioning

confidence: 99%

Atomic Origins of Friction Reduction in Metal Alloys

Cheng

Chandross

2021

Tribol Lett

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We present the results of large scale molecular dynamics simulations aimed at understanding the origins of high friction coefficients in pure metals, and their concomitant reduction in alloys and composites. We utilize a series of targeted simulations to demonstrate that different slip mechanisms are active in the two systems, leading to differing frictional behavior. Specifically, we show that in pure metals, sliding occurs along the crystallographic slip planes, whereas in alloys shear is accommodated by grain boundaries. In pure metals, there is significant grain growth induced by the applied shear stress and the slip planes are commensurate contacts with high friction. However, the presence of dissimilar atoms in alloys suppresses grain growth and stabilizes grain boundaries, leading to low friction via grain boundary sliding.

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“…Dislocations selforganized, first into networks of geometrically necessary dislocations, then into sub-grains, and ultimately into a fine-grained "tribo-layer." [96][97][98] This method of interrupted sliding on non-noble metals has also helped to understand how pearlitic steels accommodate a tribological strain through a sequence of different processes 99 and has shed light on tribologically induced oxidation. 100 At the same time, this current state of the art is not satisfactory.…”

Section: Surface Adhesion (Or Cold-welding) Of Metal Contactsmentioning

confidence: 99%