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Chinese Academy of Sciences

Advances in Nickel-Based High-Temperature Alloys and Water Jet Guided Laser Machining

Strategic Insights

— 2 min read

Recent research at the Chinese Academy of Sciences has led to significant breakthroughs in nickel-based high-temperature alloys and water jet guided laser machining. The study, funded by the National Natural Science Foundation of China and the National Key Research & Development Program of China, has shown that nickel-based high-temperature alloys exhibit exceptional properties, including high strength and resistance to oxidation, corrosion, and fatigue, making them critical materials for high-temperature components in the aerospace industry. Additionally, the research has introduced a novel double coaxial gas-assisted water jet guided laser (WJGL) processing method, which enhances the machining capacity of WJGL and leads to improved stability of the water jet.

Key Takeaways:

  • Nickel-based high-temperature alloys possess comprehensive properties, including high strength and resistance to oxidation, corrosion, and fatigue, making them crucial materials for high-temperature components in the aerospace industry.
  • The novel double coaxial gas-assisted WJGL processing method enhances the machining capacity of WJGL and increases the stability of the water jet.
  • Numerical simulations reveal the synergistic effect and hierarchical protection mechanism of double coaxial gas-assisted protection.
  • Experimental results demonstrate that double coaxial gas-assisted WJGL technology improves the stability length of the water jet and constrains interference from reverse water flow and blind hole sedimentary water layer.
  • Suitable process parameters for the double coaxial gas-assisted WJGL technology were identified as an argon velocity of 40 m/s and a spacing of 0.4 mm.
  • The micro holes obtained by using double coaxial gas-assisted WJGL technology perform better in terms of entrance and exit roundness, taper, and sidewall roughness compared to single coaxial helium-assisted WJGL technique.
  • The research has been peer-reviewed and published in the Journal of Science and Engineering.

Statistics:

  • The machined micro holes demonstrate improved entrance and exit roundness, taper, and sidewall roughness with double coaxial gas-assisted WJGL technology.
  • The penetration time is effectively shortened using the double coaxial gas-assisted WJGL technology.
  • The suitable process parameters for the double coaxial gas-assisted WJGL technology are an argon velocity of 40 m/s and a spacing of 0.4 mm.
  • The study has been peer-reviewed and published in the Journal of Engineering on November 3, 2025 (Vol. 3162).

Sources:

  • Numerical and Experimental Study On the Stability of Water-beam Fiber In Double Coaxial Gas-assisted Water Jet Guided Laser Machining (Optics and Laser Technology, 2025;190).
  • Chinese Academy of Sciences (Shenyang Institute of Automation, Shenyang 110016, Liaoning, People's Republic of China).
  • National Natural Science Foundation of China (NSFC).
  • National Key Research & Development Program of China.

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