Effects of Dispersoids on Wear Behavior of Cu-Based Nanocomposite Containing SiO<sub>2</sub>Nanoparticles

Sato, Hisashi; Miura-Fujiwara, Eri; Watanabe, Yoshihiko

doi:10.7567/jjap.51.01ak01

Cited by 3 publications

(12 citation statements)

References 12 publications

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“…When metallic materials become worn, large shear deformation occurs on the worn surface. [1][2][3][4][5][6][7][8][9] As a result, a subsurface layer is formed under the worn surface. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] This subsurface layer is known as the wear-induced layer (WIL).…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9] As a result, a subsurface layer is formed under the worn surface. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] This subsurface layer is known as the wear-induced layer (WIL). The WIL consists of nano-grains and has very high hardness.…”

Section: Introductionmentioning

confidence: 99%

“…Since the WIL has a much different microstructure from the plastically deformed region (PDR), the boundary is clearly observed between the WIL and the PDR. Although the WIL is also called the white etching layer and tribolayer, [1][2][3][4][6][7][8][9][10][11][12][13][14][15][16] the microstructures of these layers are essentially the same.…”

Section: Introductionmentioning

confidence: 99%

“…Formation mechanisms of such WILs have been reported in previous studies. [3][4][5][6][7][8][9][10][11][12][13]15) Newcomb and Stobbs investigated the microstructure of the WIL formed in a rail track surface (Fe-1 mass % Mn-0.6 mass % C-0.1 mass % Si-0.06 mass % S-0.06 mass % P alloy) by using transmission electron microscopy (TEM). 11) According to their study, 11) the WIL in the rail track surface has an apparently fully martensitic structure and is formed by the decomposition of cementite without austenitization owing to high-frequency pulse shear fatigue.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to steel, the formation behavior of the WIL in Al and Cu alloys has also been reported. 5,6,8,9,12,16) Watanabe et al reported that sliding wear for Al-Al 3 Ti functionally graded materials (FGMs) forms the supersaturated solidsolution layer, in which Ti is supersaturately dissolved in the Al matrix, below the worn surface. 12) In addition, Sato et al mentioned that the WIL in the worn Al-Al 3 Ti FGMs is generated at a nominal shear strain of more than 90, 5) and that the origin of the WIL is huge shear strain due to sliding wear.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Nanocrystallized layer formed by sliding wear under high stress for pure Cu

Sato¹,

Tsuzuki²,

Kaneko³

et al. 2015

Jpn. J. Appl. Phys.

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When metallic materials become worn, a nanocrystallized layer is often observed under the worn surface. This layer is called the wear-induced layer (WIL). In this study, the mechanism behind the formation of the WIL by sliding wear under high stress for pure Cu is investigated. The microstructure around the worn surface changes discontinuously between the WIL and the plastically deformed region (PDR). The grain size in the WIL is much smaller than that in the PDR, whereas grains in the PDR underneath the WIL are refined by huge strain due to wear. From the results of crystallographic texture analysis, the WIL has recrystallization texture, whereas deformation texture with a 〈110〉 fiber is observed in the PDR. Hence, in the WIL, frictional heat causes recrystallization, which induces further grain refinement. It is concluded that the WIL is formed by both severe plastic deformation (SPD) due to wear and the recrystallization due to frictional heat.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nanocrystallized layer formed by sliding wear under high stress for pure Cu

Sato¹,

Tsuzuki²,

Kaneko³

et al. 2015

Jpn. J. Appl. Phys.

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Mechanical and tribological property of Cu/CrB₂ composites under dry sliding condition

Guo,

Jia,

et al. 2024

Materials Science and Technology

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Dry sliding friction and wear test of Cu/CrB2 composites manufactured by ex situ method was studied, and the mechanical properties were also measured to assistant analysis wear behaviour. When CrB2 content is 3 vol.-%, both the mechanical and tribological properties reach the maximum values, viz., 113 HV, 304 MPa and 9.1 × 10−5 mm3 N−1 m−1 of the normal load is 10 N, higher 71.2%, 33.3%, lower 52.8% than that of pure Cu, respectively, which can be ascribed to the increase of hardness and the transfer of main wear mechanisms of Cu matrix from adhesive to abrasive wear by the addition of CrB2. Further increase CrB2 content to above 5 vol.-%, wear resistance would decreases since the pulled out of CrB2 particles.

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Effects of work hardening rate on formation of nanocrystallized subsurface layer in Cu alloys

Sato¹,

Kaneko²,

Watanabe³

2016

Jpn. J. Appl. Phys.

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The effects of the work hardening rate on the formation of a nanocrystallized subsurface layer by sliding wear for pure Cu and Cu–Ge alloys are investigated. The nanocrystallized subsurface layer is called the wear-induced layer (WIL). The work hardening rates of the Cu–Ge alloys increase with Ge concentration. By sliding wear, the WIL is formed around a worn surface in all the specimens. The thickness of the WIL decreases with increasing Ge concentration. This means that a thinner WIL is formed in a specimen with a higher work hardening rate. The equivalent Hencky strain required to form the WIL is about 5 regardless of the work hardening rate of the specimen. In addition, a larger strain gradient is generated just below the WIL in the specimen with a higher work hardening rate. This decrease in the thickness of the WIL depending on the work hardening rate of the specimen can be explained by the localization of shear deformation around the worn surface.

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Effects of Dispersoids on Wear Behavior of Cu-Based Nanocomposite Containing SiO₂Nanoparticles

Cited by 3 publications

References 12 publications

Nanocrystallized layer formed by sliding wear under high stress for pure Cu

Nanocrystallized layer formed by sliding wear under high stress for pure Cu

Mechanical and tribological property of Cu/CrB₂ composites under dry sliding condition

Effects of work hardening rate on formation of nanocrystallized subsurface layer in Cu alloys

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Effects of Dispersoids on Wear Behavior of Cu-Based Nanocomposite Containing SiO2Nanoparticles

Cited by 3 publications

References 12 publications

Nanocrystallized layer formed by sliding wear under high stress for pure Cu

Nanocrystallized layer formed by sliding wear under high stress for pure Cu

Mechanical and tribological property of Cu/CrB2 composites under dry sliding condition

Effects of work hardening rate on formation of nanocrystallized subsurface layer in Cu alloys

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Effects of Dispersoids on Wear Behavior of Cu-Based Nanocomposite Containing SiO₂Nanoparticles

Mechanical and tribological property of Cu/CrB₂ composites under dry sliding condition