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Gas Turbine Blade Failures Repaired Using Laser Metal Additive Remanufacturing.

Changjun Chen1, Min Zhang1, Haodong Liu2

  • 1Laser Processing Research Center, School of Mechanical and Electric Engineering, Soochow University, Suzhou 215131, China.

Materials (Basel, Switzerland)
|December 31, 2025
PubMed
Summary
This summary is machine-generated.

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Laser metal deposition (LMD) offers an efficient solution for repairing gas turbine blades, extending their service life. This additive manufacturing technique provides cost-effective, time-saving repairs for critical aerospace and industrial components.

Area of Science:

  • Materials Science and Engineering
  • Additive Manufacturing
  • Aerospace Engineering

Background:

  • Gas turbine blades, particularly high-pressure (HP) blades, face extreme operational conditions (high temperatures, pressures, stresses).
  • Damage to these critical components necessitates costly and time-consuming repairs, impacting operational efficiency.
  • Developing efficient repair strategies is crucial for maintaining the performance and longevity of turbine engines.

Purpose of the Study:

  • To systematically outline the technical workflow for repairing gas turbine blades using laser metal deposition (LMD).
  • To highlight the potential of LMD as a cost-effective and time-efficient additive manufacturing solution for aerospace and industrial gas turbine (IGT) components.
  • To provide insights into emerging development trends in blade repair and remanufacturing.
Keywords:
crackdamageerosiongas turbine bladein situ repairlaser claddinglaser metal additive remanufacturingrepair

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Main Methods:

  • Application of laser metal deposition (LMD) additive manufacturing technology since 1996.
  • Focus on high-performance repair and remanufacturing of aerospace and industrial gas turbine (IGT) blades.
  • Empirical studies demonstrating the effectiveness of protective coating deposition on HP blade leading edges.

Main Results:

  • LMD enables the deposition of high-quality, erosion-resistant protective coatings on turbine blade leading edges.
  • This protective coating significantly extends the service life of turbine blades in both aircraft engines and industrial gas turbines.
  • The methodology offers a systematic approach to blade repair, addressing the challenges of damage and wear.

Conclusions:

  • Laser metal deposition (LMD) is a viable and effective additive manufacturing technology for the repair and remanufacturing of gas turbine blades.
  • Applying erosion-resistant coatings via LMD enhances blade durability and extends operational lifespan.
  • The study provides a foundational workflow and outlook for future advancements in turbine blade repair technologies.