Wear Resistance of the Surface Layers in Silumin after Electron-Beam Treatment

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Abstract—The hardness and the tribological properties of the AK10M2N silumin subjected to irradiation by a high-energy pulsed electron beam with an energy density of 35 J/cm2 are studied. As compared to the as-cast state, the microhardness of the surface layers increases by ≈20% (up to ≈1.2 GPa), the friction coefficient decreases by a factor of ≈1.3 (down to 0.42), and the wear parameter decreases by a factor of ≈6.6 (down to 0.74 × 10–3 mm3/(N m)). These changes are shown to be caused by the dissociation of silicon and intermetallic compounds in the surface layer during irradiation by a high-energy pulsed electron beam.

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Correspondence to D. V. Zagulyaev.

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Translated by K. Shakhlevich

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Zagulyaev, D.V., Gromov, V.E., Konovalov, S.V. et al. Wear Resistance of the Surface Layers in Silumin after Electron-Beam Treatment. Russ. Metall. 2019, 981–985 (2019).

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  • Keywords: silumin
  • electron-beam treatment
  • structure
  • surface layers
  • friction
  • wear resistance
  • hardness