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<p>To address the demand for high-performance shaft components in marine engineering equipment operating under harsh corrosive environments, this paper proposes the fabrication of a 304 stainless steel /Q235 bimetallic shaft using the cross-wedge rolling technique. The effects of rolling temperature and initial thickness-to-diameter ratio on the interface bonding and deformation coordination of the composite shafts were examined using a combination of experimental and finite element simulation methods. The axial, tangential and radial stresses at the interface of the deformation zone are predominantly compressive; during the forming process, all interfacial stress components exhibit periodic oscillations to varying degrees, which facilitates the fracture of interfacial oxides and the enhancement of interfacial bonding. As the initial thickness-to-diameter ratio increases, the interfacial strength decreases, but all values remain above 300&#xa0;MPa. As the temperature increases, the interfacial shear strengths first rise and then decrease. At 1100&#xa0;° C, the interfacial bonding strength reaches a maximum of 336&#xa0;MPa. When the temperature increases to 1200&#xa0;° C, it drops to a minimum of 301&#xa0;MPa. A large number of fine grains were observed near the interface on the 304 stainless steel side, which were predominantly composed of high-angle grain boundaries (HAGBs). This characteristic indicates that excellent metallurgical bonding was achieved at the interface. On the Q235 carbon steel side, coarse ferrite grains formed in the near-interface region. when the temperature rose to 1200&#xa0;° C, the softening effect induced by grain coarsening at the interface became dominant, ultimately leading to the minimum interfacial bonding strength.</p>

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Effect of rolling temperature and initial thickness-to-diameter ratio on deformation behavior and interfacial bonding of 304 stainless steel/Q235 carbon steel bimetallic shafts via cross-wedge rolling

  • 期刊论文

  • 发表日期：

    2026年3月16日

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  • Le Zhu,
  • Jin Zhou,
  • Qiang Zhou,
  • Jiapeng Wang,
  • Haojie Zhang,
  • Baoyu Wang

摘要

To address the demand for high-performance shaft components in marine engineering equipment operating under harsh corrosive environments, this paper proposes the fabrication of a 304 stainless steel /Q235 bimetallic shaft using the cross-wedge rolling technique. The effects of rolling temperature and initial thickness-to-diameter ratio on the interface bonding and deformation coordination of the composite shafts were examined using a combination of experimental and finite element simulation methods. The axial, tangential and radial stresses at the interface of the deformation zone are predominantly compressive; during the forming process, all interfacial stress components exhibit periodic oscillations to varying degrees, which facilitates the fracture of interfacial oxides and the enhancement of interfacial bonding. As the initial thickness-to-diameter ratio increases, the interfacial strength decreases, but all values remain above 300 MPa. As the temperature increases, the interfacial shear strengths first rise and then decrease. At 1100 ° C, the interfacial bonding strength reaches a maximum of 336 MPa. When the temperature increases to 1200 ° C, it drops to a minimum of 301 MPa. A large number of fine grains were observed near the interface on the 304 stainless steel side, which were predominantly composed of high-angle grain boundaries (HAGBs). This characteristic indicates that excellent metallurgical bonding was achieved at the interface. On the Q235 carbon steel side, coarse ferrite grains formed in the near-interface region. when the temperature rose to 1200 ° C, the softening effect induced by grain coarsening at the interface became dominant, ultimately leading to the minimum interfacial bonding strength.