Scholarlink

WeldWelds repair is a critical issue in low-carbon steel piping due to the equipment’s importance in the energy and chemical processing sectors. This research evaluates both repair and original weldsWelds through empirical welding experiments. After welding, destructive tests are conducted, including microhardness, tensile, Charpy, and crack tip opening displacement at −29 °C. The assessment of repair weldsWelds is further supported by scanning electron microscopy (SEM)Scanning Electron Microscopy (SEM), electron backscatter diffraction (EBSD)Electron Backscatter Diffraction (EBSD), and atomic-scaleAtomic-scale simulation and modelling using analytical techniques. The welding experiments are performed on A106 Grade B low-carbon steel piping with an 18-inch diameter. EBSDElectron Backscatter Diffraction (EBSD) provides nanoscaleNanoscale information on phase fractions, crystal structures, and lattice parameters. Analytical modelling calculates the energy-volume derivative (d2E/dV2) to determine bulk modulus and fracture toughnessFracture toughness, yielding values of 216 GPa and 130 MPa√m, respectively. These weldsWelds surpass industry standards, enhancing asset performance and extending equipment lifespan.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Investigation of Fracture Toughness in Repair Weld of Process Piping Using Electron Backscatter Diffraction and Atomic-Scale Modelling

  • 会议论文

  • 发表日期：

    2026年

查看全文
  • Gil M. Agag,
  • Persia Ada N. de Yro,
  • Clodualdo Aranas

摘要

WeldWelds repair is a critical issue in low-carbon steel piping due to the equipment’s importance in the energy and chemical processing sectors. This research evaluates both repair and original weldsWelds through empirical welding experiments. After welding, destructive tests are conducted, including microhardness, tensile, Charpy, and crack tip opening displacement at −29 °C. The assessment of repair weldsWelds is further supported by scanning electron microscopy (SEM)Scanning Electron Microscopy (SEM), electron backscatter diffraction (EBSD)Electron Backscatter Diffraction (EBSD), and atomic-scaleAtomic-scale simulation and modelling using analytical techniques. The welding experiments are performed on A106 Grade B low-carbon steel piping with an 18-inch diameter. EBSDElectron Backscatter Diffraction (EBSD) provides nanoscaleNanoscale information on phase fractions, crystal structures, and lattice parameters. Analytical modelling calculates the energy-volume derivative (d2E/dV2) to determine bulk modulus and fracture toughnessFracture toughness, yielding values of 216 GPa and 130 MPa√m, respectively. These weldsWelds surpass industry standards, enhancing asset performance and extending equipment lifespan.