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<p>The objective of this study is to create a composite material comprising pure Zr and Q345 steel with Ti foil as an interlayer, using the diffusion composite method. Four temperature gradients of Zr/Ti/Q345 steel composite plates were prepared in a vacuum hot press sintering furnace under vacuum conditions at diffusion temperature of 800-950&#xa0;°C, pressure of 10 MPa and diffusion time of 2 h. The element diffusion, interface product composition, mechanical properties and electrochemical corrosion behavior of composite interfaces at different temperatures were investigated, and the diffusion mechanism and fracture failure mechanism of composite plates were analyzed. The thickness of the reaction layer at the composite interface increases with temperature, in which a dendritic structure is formed at the Zr/Ti interface and the dendritic structure plays a role in hindering crack extension, and ZrC and TiC layers are formed at the Ti/Fe interface, and the optimum shear strength can be obtained by controlling the thickness of the ZrC and TiC layers. The maximum shear strength of the composite plate was determined to be 208 MPa at 900&#xa0;°C.</p>

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Diffusion Bonding and Interfacial Elements Diffusion Behavior of Q345 Steel to Zirconium Using an Titanium Interlayer

  • 期刊论文

  • 发表日期：

    2025年11月18日

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  • Chaoqun Xia,
  • Huamiao Yang,
  • Shuguang Liu,
  • Bohan Chen,
  • Ning Liu,
  • Tai Yang,
  • Qiang Li

摘要

The objective of this study is to create a composite material comprising pure Zr and Q345 steel with Ti foil as an interlayer, using the diffusion composite method. Four temperature gradients of Zr/Ti/Q345 steel composite plates were prepared in a vacuum hot press sintering furnace under vacuum conditions at diffusion temperature of 800-950 °C, pressure of 10 MPa and diffusion time of 2 h. The element diffusion, interface product composition, mechanical properties and electrochemical corrosion behavior of composite interfaces at different temperatures were investigated, and the diffusion mechanism and fracture failure mechanism of composite plates were analyzed. The thickness of the reaction layer at the composite interface increases with temperature, in which a dendritic structure is formed at the Zr/Ti interface and the dendritic structure plays a role in hindering crack extension, and ZrC and TiC layers are formed at the Ti/Fe interface, and the optimum shear strength can be obtained by controlling the thickness of the ZrC and TiC layers. The maximum shear strength of the composite plate was determined to be 208 MPa at 900 °C.