The role of stacking fault energy and induced residual stresses on the sliding wear of aluminum bronze

Wert, J.J.; Singerman, S.A.; Caldwell, S. G.; Quarles, R.A.

doi:10.1016/0043-1648(83)90071-6

Cited by 27 publications

(12 citation statements)

References 12 publications

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“…The lower wear rate of CuZn36 than CuZn15 agreed very well with results reported in Ref. [54]. Planar slip during deformation led to the formation of slip bands and twin boundaries, both depending on the crystallographic orientation of the grains.…”

Section: Wearsupporting

confidence: 91%

“…[11,12,53] reports that the wear resistance of Cu-Zn alloys increases with zinc concentration from 8 to 25 wt% Zn and improved resistance to galling with decreasing SFE. It needs to be mentioned that the opposite trend was reported for aluminum bronze alloys [54,55], while other authors did not find any correlation [51]. We speculate that the reasoning in our case is more intricate: the much higher, exponential wear behavior of CuZn5 compared to the other two alloys together with the material transfer from Si 3 N 4 to CuZn5 distinguished CuZn5 from CuZn15 and CuZn36, which did not adhere to the counter-body.…”

Section: Wearcontrasting

confidence: 55%

“…These research efforts led to somewhat contradictory results. While one group of authors describes a decrease in wear rate with lower stacking fault energies [55], others reported the opposite [54]. As our own research has focused on revealing the elementary mechanisms acting in a metal under a tribological load, we therefore concluded that studying the SFE effect on tribological properties of copper-zinc alloys and their microstructural evolution under a tribological load, as well as the corresponding wear mechanisms, would be a valuable addition to the existing literature.…”

Section: Introductionmentioning

confidence: 85%

“…This was already studied in the 1970s, e.g., in the Ph.D. thesis by Peter Blau [50] or by Suh and Saka [51] for single-phase fcc materials. In later decades, other materials such as biomedical steels and Co-based alloys where investigated [52,53], while at the same time, Cu-based alloys were still intensively studied [54,55]. These research efforts led to somewhat contradictory results.…”

Section: Introductionmentioning

confidence: 99%

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Tribological performance and microstructural evolution of α-brass alloys as a function of zinc concentration

et al. 2020

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Tailoring a material's properties for low friction and little wear in a strategic fashion is a long-standing goal of materials tribology. Plastic deformation plays a major role when metals are employed in a sliding contact; therefore, the effects of stacking fault energy and mode of dislocation glide need to be elucidated. Here, we investigated how a decrease in the stacking fault energy affects friction, wear, and the ensuing sub-surface microstructure evolution. Brass samples with increasing zinc concentrations of 5, 15, and 36 wt% were tested in non-lubricated sphere-on-plate contacts with a reciprocating linear tribometer against Si 3 N 4 spheres. Increasing the sliding distance from 0.5 (single trace) to 5,000 reciprocating cycles covered different stages in the lifetime of a sliding contact. Comparing the results among the three alloys revealed a profound effect of the zinc concentration on the tribological behavior. CuZn15 and CuZn36 showed similar friction and wear results, whereas CuZn5 had a roughly 60% higher friction coefficient (COF) than the other two alloys. CuZn15 and CuZn36 had a much smaller wear rate than CuZn5. Wavy dislocation motion in CuZn5 and CuZn15 allowed for dislocation self-organization into a horizontal line about 150 nm beneath the contact after a single trace of the sphere. This feature was absent in CuZn36 where owing to planar dislocation slip band-like features under a 45° angle to the surface were identified. These results hold the promise to help guide the future development of alloys tailored for specific tribological applications.

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Section: Wearsupporting

confidence: 91%

Section: Wearcontrasting

confidence: 55%

Section: Introductionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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Tribological performance and microstructural evolution of α-brass alloys as a function of zinc concentration

et al. 2020

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“…During past six decades, studies on the Al wear under a dry-sliding (no lubricants) constraint have revealed that the large plastic strain would occur near subsurfaces on the Al-substrate when the wear process took place. Some experimental observations suggested that the Al wear rate be inversely proportional to the Al hardness because the higher Al hardness usually led to less plastic deformation on the Al-substrate [1]. Therefore, the understandings of the wear process may provide some valuable information for mechanisms of friction, lubrication and adhesion at the nano-scale [2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Atomistic Simulation of Severely Adhesive Wear on a Rough Aluminum Substrate

Zhong¹

2021

Tribology in Materials and Manufacturing - Wear, Friction and Lubrication

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In this Chapter, a severely adhesive wear on a rough aluminum (Al) substrate is simulated by molecular dynamics (MD) under a high velocity impact of a hard-asperity (a hard-tip) with the Al-asperity. Multiple simulations include effects of four factors: the inter-asperity bonding, the geometry overlap between two asperities, the impact velocity between two asperities and the starting temperature of the Al-substrate. It is observed that the deformation mechanism on the Al-substrate would involve a local melting (from 1200 to 2500 K) which forms liquid type layers (amorphous textures) in the contact area between two asperities. Also, temperature profiles on the hard-tip and the Al-substrate is depicted. Moreover, a method in the Design of Experiments (DOE) is employed to interpret above all simulations. The DOE results indicate that the inter-asperity bonding and the geometry overlap between two asperities would substantially increase the wear rate (for about 53.56% and 67.29% contributions), while the starting temperature of the Al-substrate and the impact velocity between two asperities would play less important roles (about 10.30% and 6.61%) in raising the wear rate.

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Metal science in the theory of friction and wear

Rybakova¹,

Kuksenova²

1985

Met Sci Heat Treat

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The role of stacking fault energy and induced residual stresses on the sliding wear of aluminum bronze

Cited by 27 publications

References 12 publications

Tribological performance and microstructural evolution of α-brass alloys as a function of zinc concentration

Tribological performance and microstructural evolution of α-brass alloys as a function of zinc concentration

Atomistic Simulation of Severely Adhesive Wear on a Rough Aluminum Substrate

Metal science in the theory of friction and wear

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