Friction and Wear Characteristics of Single Crystal Ni-Based Superalloys at Elevated Temperatures

Stoyanov, Pantcho; Dawag, Lesley; Goberman, Daniel; Shah, D. M.

doi:10.1007/s11249-018-0994-1

Cited by 21 publications

(6 citation statements)

References 21 publications

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“…In the empirical wear relation developed by Archard [ 2 ], the wear volume per unit sliding distance is proportional to the normal force and the material hardness. Tribological experiments [ 3 , 4 , 5 ] showed that the friction and wear properties vary greatly in different material systems. By performing the ball-on-plate test for copper of three structures, i.e., the coarse-grained, nano-grained, and gradient nano-grained structures, Chen et al [ 6 ] found that the friction coefficient and wear rate are highest in the coarse-grained copper.…”

Section: Introductionmentioning

confidence: 99%

Friction and Wear in Nanoscratching of Single Crystals: Effect of Adhesion and Plasticity

Zeng

2022

Nanomaterials

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Friction and wear are two main tribological behaviors that are quite different for contact surfaces of distinct properties. Conventional studies generally focus on a specific material (e.g., copper or iron) such that the tribological result is not applicable to the other contact systems. In this paper, using a group of virtual materials characterized by coarse-grained potentials, we studied the effect of interfacial adhesion and material plasticity on friction and wear by scratching a rigid tip over an atomic smooth surface. Due to the combined effects of adhesion and plasticity on the nanoscratch process, the following findings are revealed: (1) For shallow contact where interfacial adhesion dominates friction, both friction coefficient and wear rate increase as the adhesion increases to a critical value. For deep contact where plasticity prevails, the variation of friction coefficient and wear rate is limited as the adhesion varies. (2) For weak and strong interfacial adhesions, the friction coefficient exhibits different dependence on the scratch depth, whereas the wear rate becomes higher as the scratch depth increases. (3) As the material hardness increases, both the friction coefficient and wear rate decrease in shallow and deep contacts.

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Section: Introductionmentioning

confidence: 99%

Friction and Wear in Nanoscratching of Single Crystals: Effect of Adhesion and Plasticity

Zeng

2022

Nanomaterials

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“…During the friction process of nickel-based superalloy at high temperature, it has been found that a thin and physically homogeneous oxide layer was formed on the component surface [17][18][19][20]. The formed oxide layer was also known as the glaze-layer, which was reported to contribute to the low coe cient of friction (COF) and wear rate for NBSC superalloys at high temperature [21,22]. A widely recognized speculation was that the glaze-layer was formed by compacting and sintering the wear particles produced during sliding process with the presence of heat [18, 23,24].…”

Section: Introductionmentioning

confidence: 99%

“…In comparison with nickel oxides and chromium oxides, cobalt oxides have been reported to have the lower friction and wear, and they preferred to form a continuous solid lm instead of being worn off [22,31]. However, not all metal oxides are bene cial for reducing friction and wear.…”

Section: Introductionmentioning

confidence: 99%

“…The peaks Cr x O y also appeared at 360 cm − 1 , 550 cm− 1 [38, 41]. It can conclude that different kinds of metal oxides (including Ni, Cr, Co, and W) were generated at elevated temperature, that contributed to the reduction of friction and wear[18,22,42]. Although friction induced heat at room temperature also cause the surface oxidation, the amount of the oxides was too small to improve the tribological performance of the SP-NBSC superalloy.…”

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confidence: 99%

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Tribological Behavior of a Shot-Peened Nickel-Based Single Crystal Superalloy at High Temperature

Li³

et al. 2022

Tribol Lett

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The tribological behavior of a nickel-based single crystal (NBSC) superalloy treated by shot-peening has been investigated. Friction tests under three normal loads and three temperatures were carried out based on the ball-on-disc con guration. The results showed that coe cient of friction (COF) and wear rate of the shot-peened superalloy at room temperature were nearly 2 times and 4 times that at 600 ℃, respectively. However, there were no signi cant difference in COF and wear rate between the shot-peened NBSC superalloy and the as-received NBSC superalloy, which was ascribed to the competing effects between the increased hardness and the increased roughness of NSBC superalloy after shot-peening. High temperature friction promoted the formation of a glaze-layer on the substrate, which was derived from the sintering and compacting of oxidized wear debris. The formed glaze-layer prevented the direct contact of the friction pair and contributed to the reduced COF and wear rate. The wear mechanism of the SP-NSBC superalloy at high temperature included oxidation, adhesion, and abrasion. With the decreasing normal load and increasing temperature, the adhesive wear weakened. This work provided insights into the effects of shot-peening treatment on the tribological properties of NBSC superalloy.

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“…Materials development and performance improvement of tribological systems in demanding applications such as gas turbine engines requires extensive testing as well as high fidelity ex situ analysis [1][2][3][4][5]. Examples of classes of tribological materials used in gas turbine engine have been previously reported [1,5] and are shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Tribological Characteristics of Manufactured Carbon Under Extreme Contact Conditions

Ross¹,

Ignatov²,

Stoyanov³

2021

Tribol. Ind.

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Friction and Wear Characteristics of Single Crystal Ni-Based Superalloys at Elevated Temperatures

Cited by 21 publications

References 21 publications

Friction and Wear in Nanoscratching of Single Crystals: Effect of Adhesion and Plasticity

Friction and Wear in Nanoscratching of Single Crystals: Effect of Adhesion and Plasticity

Tribological Behavior of a Shot-Peened Nickel-Based Single Crystal Superalloy at High Temperature

Tribological Characteristics of Manufactured Carbon Under Extreme Contact Conditions

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