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The material quality of the fan turbine third stage rotor blades, cast from heat-resistant nickel alloy ZhS3DK-VI according to serial equiaxial crystallization technology, has been studied. It was established that the material of the experimental blades and samples, in parameters of chemical composition, macro- and microstructure, mechanical and heat-resistant properties, complies with OST 1 90126–85 requirements. The dimensions of the structural components and the distance between the second-order axes of dendrites in the feather blade are approximately ~1.5 times smaller than in the tail section. According to the results of bending tests, it was established that the blades’ angle of bending, measured after unloading, is from 105 to 110°. No cracks were found in the bend zone. Studies of the original ZhS3DK-VI alloy's structural stability, carried out using well-known calculation and analytical techniques, indicate its sufficient balance in terms of the alloying elements complex and, consequently, its wide suitability for further modification in various ways.

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Investigation of Zhs3dk-VI Alloy as a Material of Gas Turbine Engine Cast Blades

  • 会议论文

  • 发表日期：

    2025年

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  • Dmytro Tomkin,
  • Oleksii Pedash,
  • Olena Naumyk,
  • Valeriy Naumyk,
  • Eduard Kondratiuk

摘要

The material quality of the fan turbine third stage rotor blades, cast from heat-resistant nickel alloy ZhS3DK-VI according to serial equiaxial crystallization technology, has been studied. It was established that the material of the experimental blades and samples, in parameters of chemical composition, macro- and microstructure, mechanical and heat-resistant properties, complies with OST 1 90126–85 requirements. The dimensions of the structural components and the distance between the second-order axes of dendrites in the feather blade are approximately ~1.5 times smaller than in the tail section. According to the results of bending tests, it was established that the blades’ angle of bending, measured after unloading, is from 105 to 110°. No cracks were found in the bend zone. Studies of the original ZhS3DK-VI alloy's structural stability, carried out using well-known calculation and analytical techniques, indicate its sufficient balance in terms of the alloying elements complex and, consequently, its wide suitability for further modification in various ways.