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<p>In this paper, P110 steel was prepared using the metallurgical bonding technology on the outer layer of Incoloy 825 alloy to prepare a new type of rolling billet for oil well tubing. Investigating the organization evolution of the composites’ interfacial zone under different deformation conditions, a thermal compression test with 50% compression was carried out on the composites using a thermal simulator. The interfacial region between the two materials was examined for its microstructural features and dynamic recrystallization. Under a deformation condition of 0.01s<sup>−1</sup> at 1150&#xa0;°C, the Incoloy 825 alloy exhibited enhanced dynamic recrystallization, achieving a recrystallization fraction of 47.5% with characteristic necklace microstructures. In contrast, P110 steel showed more significant recrystallization when subjected to a strain rate of 10s<sup>−1</sup> at 1050&#xa0;°C, achieving a recrystallization fraction of 8.7%, with grain size refining from 11.98&#xa0;μm to 8.91&#xa0;μm.</p>

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Interfacial Organization Evolution of P110 Steel/Incoloy 825 Alloy in Bimetallic Pipe After Hot Compression

  • 期刊论文

  • 发表日期：

    2026年3月26日

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  • Xiaohua Wang,
  • Jianhua Hu,
  • Chunjiang Zhao,
  • Jiawang Ma,
  • Yadong Hao,
  • Yihang Pei

摘要

In this paper, P110 steel was prepared using the metallurgical bonding technology on the outer layer of Incoloy 825 alloy to prepare a new type of rolling billet for oil well tubing. Investigating the organization evolution of the composites’ interfacial zone under different deformation conditions, a thermal compression test with 50% compression was carried out on the composites using a thermal simulator. The interfacial region between the two materials was examined for its microstructural features and dynamic recrystallization. Under a deformation condition of 0.01s−1 at 1150 °C, the Incoloy 825 alloy exhibited enhanced dynamic recrystallization, achieving a recrystallization fraction of 47.5% with characteristic necklace microstructures. In contrast, P110 steel showed more significant recrystallization when subjected to a strain rate of 10s−1 at 1050 °C, achieving a recrystallization fraction of 8.7%, with grain size refining from 11.98 μm to 8.91 μm.