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Träfflista för sökning "WFRF:(Braham H) srt2:(2015-2019)"

Sökning: WFRF:(Braham H) > (2015-2019)

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  • Bakshi, S. Das, et al. (författare)
  • Dry rolling/sliding wear of nanostructured pearlite
  • 2015
  • Ingår i: Materials Science and Technology. - 0267-0836 .- 1743-2847. ; 31:14, s. 1735-1744
  • Tidskriftsartikel (refereegranskat)abstract
    • The dry rolling-sliding wear behaviour of pearlite that has an interlamellar spacing of just 85 nm has been characterised. Its wear resistance is found to be comparable to that of much harder bainitic steels. Microstructural observations indicate that there is substantial plastic deformation of both ferrite and cementite components of pearlite in the vicinity of the wear surface. Plasticity is not expected from Hertzian analysis that assumes a smooth contact surface. Instead, it is likely to be a consequence of exaggerated stresses due to surface roughness. The material remains ductile to shear strains in the order of 4. Diffraction data indicate that the coherent domain size is reduced to about half the interlamellar spacing and that some of the cementite may dissolve and contribute to the expansion of the lattice parameter of ferrite
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3.
  • Yonehara, M., et al. (författare)
  • Proposal of Biomimetic Tribological System to Control Friction Behavior under Boundary Lubrication by Applying 3D Metal Printing Process
  • 2018
  • Ingår i: Tribology Online. - : Japanese Society of Tribologists. - 1881-218X .- 1881-2198. ; 13:1, s. 8-14
  • Tidskriftsartikel (refereegranskat)abstract
    • A new concept was proposed as biomimetic tribological (BMT) system by using three-dimensional (3D) printing process. The BMT had a lubricant supply path (LSP) beneath the sliding surface. The tribological properties could be actively controlled by directly supplying lubricant additives (anti-wear additive and friction modifier) alone to the sliding surface through the LSP during a friction process. To confirm the effectiveness of the LSP surface for improving the tribological performance under boundary lubrication, friction tests were conducted on a plate specimen with a lubricant supply path that was manufactured by a 3D metal printer. Experimental results suggest that the LSP surface system was more effective for friction reduction than a conventional system, and it offered an effective way to actively control the tribological performance under boundary lubrication. 
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