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<p>TC4/316H composite plates possess excellent comprehensive strength and corrosion resistance, serving as a key material for high-end equipment in aerospace and marine engineering. However, the temperature-dependent interface control mechanism during their vacuum hot rolling remains unclear. In this study, TC4/316H composite plates were prepared via asymmetric ingot casting and vacuum hot rolling at 850, 900, and 950&#xa0;°C. Their interfacial bonding quality, mechanical properties (shear and tensile), and microstructure evolution were systematically investigated, while Abaqus finite element simulation was used to analyze TC4/316H deformation compatibility and its correlation with experimental data. Results show that the 900&#xa0;°C-rolled composite plate achieves optimal comprehensive performance: shear strength of 298&#xa0;MPa, coupled with tensile performance (UTS = 910.2&#xa0;MPa, EL = 4.5%). This is attributed to the optimized interface metallurgical bonding, with a moderate diffusion layer (2.12&#xa0;μm) and moderate Ti-Fe interdiffusion, without too much brittle IMCs, which enhances the deformation coordination. At 850&#xa0;°C, the interface is dominated by mechanical interlocking with discrete micropores, giving a shear strength of 238&#xa0;MPa. At 950&#xa0;°C, intensified Ti-Fe diffusion induces massive brittle IMCs (e.g., FeTi, Fe<sub>2</sub>Ti), reducing shear strength to 255&#xa0;MPa. Finite element simulation confirms that 900 °C enables the best TC4/316H deformation coordination, consistent with the experimental observation of excellent surface flatness and high bonding strength at this temperature. This study provides a reliable simulation route and experimental basis for the industrial production of high-performance TC4/316H composite plates.</p>

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Effect of Rolling Temperature on Microstructure and Properties of Vacuum Hot-Rolled TC4/316H Composite Plates

  • 期刊论文

  • 发表日期：

    2026年2月8日

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  • Xiping Zhang,
  • Lifeng Ma,
  • Zhihui Cai,
  • Junyi Lei,
  • Shiyi Zhang,
  • Quan Li,
  • Pengfei Feng

摘要

TC4/316H composite plates possess excellent comprehensive strength and corrosion resistance, serving as a key material for high-end equipment in aerospace and marine engineering. However, the temperature-dependent interface control mechanism during their vacuum hot rolling remains unclear. In this study, TC4/316H composite plates were prepared via asymmetric ingot casting and vacuum hot rolling at 850, 900, and 950 °C. Their interfacial bonding quality, mechanical properties (shear and tensile), and microstructure evolution were systematically investigated, while Abaqus finite element simulation was used to analyze TC4/316H deformation compatibility and its correlation with experimental data. Results show that the 900 °C-rolled composite plate achieves optimal comprehensive performance: shear strength of 298 MPa, coupled with tensile performance (UTS = 910.2 MPa, EL = 4.5%). This is attributed to the optimized interface metallurgical bonding, with a moderate diffusion layer (2.12 μm) and moderate Ti-Fe interdiffusion, without too much brittle IMCs, which enhances the deformation coordination. At 850 °C, the interface is dominated by mechanical interlocking with discrete micropores, giving a shear strength of 238 MPa. At 950 °C, intensified Ti-Fe diffusion induces massive brittle IMCs (e.g., FeTi, Fe2Ti), reducing shear strength to 255 MPa. Finite element simulation confirms that 900 °C enables the best TC4/316H deformation coordination, consistent with the experimental observation of excellent surface flatness and high bonding strength at this temperature. This study provides a reliable simulation route and experimental basis for the industrial production of high-performance TC4/316H composite plates.