<p>Laser shock processing is known to enhance the surface hardness effectively while preserving the tensile strength of the original part. This work presents a novel approach for laser shock processing of titanium samples using an integral laser processing method that incorporates the usage of auxiliary laser-induced graphene layer for improved energy efficiency. In this research, the optimal laser processing regimes were found to produce the laser-induced graphene by modifying thin polyimide sheets, to be used as both absorption and confinement layers at the subsequent laser shock processing of the Ti targets, thus allowing to increase the overall method performance. The resulting hardness values of surface layers exceeded the initial titanium hardness by 4.3-4.5 times, reaching approximately 850-890&#xa0;HV. These findings allow the proposed method to be applied for the benefit of the performance and service life of machine components, cutting tools, gears, and other structural elements.</p>

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Laser Shock Processing Assisted by Laser-Induced Graphene

  • X. A. Egorova,
  • F. A. Gorensky,
  • K. A. Rozanov,
  • A. D. Sidorova,
  • A. G. Bondarenko,
  • A. Iqbal,
  • G. V. Romanova,
  • D. A. Sinev

摘要

Laser shock processing is known to enhance the surface hardness effectively while preserving the tensile strength of the original part. This work presents a novel approach for laser shock processing of titanium samples using an integral laser processing method that incorporates the usage of auxiliary laser-induced graphene layer for improved energy efficiency. In this research, the optimal laser processing regimes were found to produce the laser-induced graphene by modifying thin polyimide sheets, to be used as both absorption and confinement layers at the subsequent laser shock processing of the Ti targets, thus allowing to increase the overall method performance. The resulting hardness values of surface layers exceeded the initial titanium hardness by 4.3-4.5 times, reaching approximately 850-890 HV. These findings allow the proposed method to be applied for the benefit of the performance and service life of machine components, cutting tools, gears, and other structural elements.