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This paper studied Z2CN19-10 controlled nitrogen content stainless steel fabricated through Wire Arc Additive Manufacturing (WAAM) and P280GH carbon steel produced via Laser Metal Deposition (LMD) focused on microstructure and mechanical properties by Optical Microscopy (OM), Electron Backscatter Diffraction (EBSD), Scanning Electron Microscopy (SEM) and mechanical equipment. The results were compared those of conventionally manufactured materials and evaluated according to the RCC-M standard. The findings reveal that WAAM fabricated material exhibit an austenitic and ferritic microstructure, and LMD fabricated material display a microstructure composed of ferrite and pearlite. Both WAAM and LMD fabricated materials comply with the RCC-M standards concerning room temperature and high temperature tensile properties, as well as Charpy impact energy. The yield strength, tensile strength, and toughness in the Z-direction are found to be the least optimal for both materials. Tensile and impact specimens from both materials exhibit ductile fracture characteristics.

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Study on Microstructure and Mechanical Properties Evaluation of Additive Manufacturing Materials for Nuclear Power Applications

  • 会议论文

  • 发表日期：

    2026年

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  • Shi Jian-hui,
  • Liu Hui-qiang,
  • Liu Zheng-ping,
  • Wang Rong-cheng,
  • Dong Hai-tao,
  • Huan-chun Wu

摘要

This paper studied Z2CN19-10 controlled nitrogen content stainless steel fabricated through Wire Arc Additive Manufacturing (WAAM) and P280GH carbon steel produced via Laser Metal Deposition (LMD) focused on microstructure and mechanical properties by Optical Microscopy (OM), Electron Backscatter Diffraction (EBSD), Scanning Electron Microscopy (SEM) and mechanical equipment. The results were compared those of conventionally manufactured materials and evaluated according to the RCC-M standard. The findings reveal that WAAM fabricated material exhibit an austenitic and ferritic microstructure, and LMD fabricated material display a microstructure composed of ferrite and pearlite. Both WAAM and LMD fabricated materials comply with the RCC-M standards concerning room temperature and high temperature tensile properties, as well as Charpy impact energy. The yield strength, tensile strength, and toughness in the Z-direction are found to be the least optimal for both materials. Tensile and impact specimens from both materials exhibit ductile fracture characteristics.