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<p>The development of advanced structural materials is a&#xa0;prerequisite for the feasibility of next-generation reactor projects. Current widely used steels and alloys fail to fully meet the requirements of these projects, while most innovative solutions are limited by scalability and manufacturability. This paper presents an approach of the NIKIET JSC to the development of structural materials for advanced reactor systems. Using this approach, EK199-VI nickel alloy was developed as the main structural material of the molten-salt research reactor, along with advanced EK205-Sh high-strength austenitic steel for operation in heavy liquid-metal coolants. The results of testing confirm the materials meeting specified requirements and demonstrate their technological feasibility.</p>

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Innovative structural materials for advanced nuclear reactor systems: development, performance testing, and industrial implementation

  • 期刊论文

  • 发表日期：

    2026年7月3日

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  • A. B. Korostelev,
  • M. V. Shishimirov,
  • O. V. Goslavsky,
  • V. O. Ivanov,
  • A. I. Sednev,
  • I. M. Bykov,
  • A. S. Naumkin

摘要

The development of advanced structural materials is a prerequisite for the feasibility of next-generation reactor projects. Current widely used steels and alloys fail to fully meet the requirements of these projects, while most innovative solutions are limited by scalability and manufacturability. This paper presents an approach of the NIKIET JSC to the development of structural materials for advanced reactor systems. Using this approach, EK199-VI nickel alloy was developed as the main structural material of the molten-salt research reactor, along with advanced EK205-Sh high-strength austenitic steel for operation in heavy liquid-metal coolants. The results of testing confirm the materials meeting specified requirements and demonstrate their technological feasibility.