Scholarlink

<p>Introducing oxide particles into martensitic stainless steel (MSS) can significantly enhance the material’s comprehensive mechanical properties. However, the traditional powder metallurgy process suffers from prolonged preparation cycles and low material utilization rates, which severely limit its industrial scalability and further development. As an emerging manufacturing technology, arc additive manufacturing (AM) effectively overcomes these drawbacks. This study therefore proposes an innovative and rapid fabrication approach based on an oxide coating strategy, enabling the uniform incorporation of submicron spherical oxide particles (Y<sub>2</sub>O<sub>3</sub>, TiO<sub>2</sub>) during wire arc additive manufacturing (WAAM) of 1Cr13. This method facilitates efficient material deposition and enables precise control over microstructure and performance. Experimental results show that temperature gradients lead to a non-uniform distribution of martensite, tempered martensite, and ferrite within the matrix. Upon the addition of Y<sub>2</sub>O<sub>3</sub> particles, fine Y<sub>2</sub>O<sub>3</sub> dispersoids are uniformly distributed throughout the matrix without significantly altering the base microstructure. When both Y<sub>2</sub>O<sub>3</sub> and TiO<sub>2</sub> particles are introduced simultaneously, Ti-Y-O composite oxides and Ti-rich oxides are generated within the matrix, which further refine the oxide particle size, reduce the grain size of the deposited layer, and increase the dislocation density. The presence of these uniformly dispersed submicron oxides substantially enhances the material’s room-temperature hardness and tensile strength, while significantly improving its high-temperature tensile performance at 600 °C.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Influence of Y2O3/TiO2 Addition on the Microstructure and Mechanical Properties of 1Cr13 Martensitic Stainless Steel Fabricated by Wire Arc Additive Manufacturing

  • 期刊论文

  • 发表日期：

    2026年6月1日

查看全文
  • Peng Hua,
  • Yang Liu,
  • Guoxin Luo,
  • Xianfen Li,
  • Wei Zhou,
  • Youwen Yang,
  • Dashuang Liu

摘要

Introducing oxide particles into martensitic stainless steel (MSS) can significantly enhance the material’s comprehensive mechanical properties. However, the traditional powder metallurgy process suffers from prolonged preparation cycles and low material utilization rates, which severely limit its industrial scalability and further development. As an emerging manufacturing technology, arc additive manufacturing (AM) effectively overcomes these drawbacks. This study therefore proposes an innovative and rapid fabrication approach based on an oxide coating strategy, enabling the uniform incorporation of submicron spherical oxide particles (Y2O3, TiO2) during wire arc additive manufacturing (WAAM) of 1Cr13. This method facilitates efficient material deposition and enables precise control over microstructure and performance. Experimental results show that temperature gradients lead to a non-uniform distribution of martensite, tempered martensite, and ferrite within the matrix. Upon the addition of Y2O3 particles, fine Y2O3 dispersoids are uniformly distributed throughout the matrix without significantly altering the base microstructure. When both Y2O3 and TiO2 particles are introduced simultaneously, Ti-Y-O composite oxides and Ti-rich oxides are generated within the matrix, which further refine the oxide particle size, reduce the grain size of the deposited layer, and increase the dislocation density. The presence of these uniformly dispersed submicron oxides substantially enhances the material’s room-temperature hardness and tensile strength, while significantly improving its high-temperature tensile performance at 600 °C.