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This study investigated the effects of solution treatment on the microstructure and mechanical properties of GH3536 using Optical Microscopy (OM), Scanning Electron Microscopy (SEM), and a universal material testing machine. The results indicated that after solution treatment at 1175 °C for 45 min, the forged GH3536 underwent recrystallization and grain growth, with the originally chain-like distributed primary M6C carbides partially dissolving. This transformation in microstructure led to significant changes in the alloy’s mechanical properties: the tensile strength decreased by 11.09%, while the elongation increased by 12.58%, and the hardness decreased by 26.45%. However, in high-temperature creep tests, the rupture time of the alloy increased by 32.30%, and the post-rupture elongation increased by 35.5%. The solution treatment significantly enhanced the alloy’s high-temperature performance, mainly due to the enlargement of grains and the dissolution of primary M6C carbides. Further analysis of the microstructure confirmed the positive impact of solution heat treatment on the alloy’s mechanical properties.

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Effect of Solid Solution Heat Treatment Microstructure and Properties of Forged Gh3536 Superalloy

  • 会议论文

  • 发表日期：

    2025年

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  • Shuang Ji,
  • Yaning Mao,
  • Wen Chen,
  • Yingli Zhao,
  • Yanguang Han,
  • Mingqiang Fan,
  • Lingling Ren,
  • Shengjie Guo,
  • Yubin Xu,
  • Chao Wang,
  • Lanji Zhao,
  • Jianqiang Wang,
  • Fuli Zhang,
  • Lijuan Bai

摘要

This study investigated the effects of solution treatment on the microstructure and mechanical properties of GH3536 using Optical Microscopy (OM), Scanning Electron Microscopy (SEM), and a universal material testing machine. The results indicated that after solution treatment at 1175 °C for 45 min, the forged GH3536 underwent recrystallization and grain growth, with the originally chain-like distributed primary M6C carbides partially dissolving. This transformation in microstructure led to significant changes in the alloy’s mechanical properties: the tensile strength decreased by 11.09%, while the elongation increased by 12.58%, and the hardness decreased by 26.45%. However, in high-temperature creep tests, the rupture time of the alloy increased by 32.30%, and the post-rupture elongation increased by 35.5%. The solution treatment significantly enhanced the alloy’s high-temperature performance, mainly due to the enlargement of grains and the dissolution of primary M6C carbides. Further analysis of the microstructure confirmed the positive impact of solution heat treatment on the alloy’s mechanical properties.