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<p>In this study, the Gaussian heat flux source was used for thermal analysis to estimate the effect of heat input in the C-276 weldments. The L<sub>4</sub> design of experiments was used for both simulation and experimentation; the experiments were carried out using the CO<sub>2</sub> laser beam welding process. In thermal analysis, the maximum temperature at the fusion zone, and the resulting residual stresses were verified with experimentation. The weld joints were found to be free from defects verified with optical and scanning electron microscopy. The micro-segregation occurring in the joints was investigated using energy-dispersive X-ray spectroscopy (EDS). Factor of safety was more than 1.0 in all the samples compared to the base material tensile strength. Tensile tests confirmed that the strength of the weld zone is higher than that of the parent metals.</p>

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Thermal and Mechanical Analysis of C-276 Alloy Using CO2 Laser Beam Welding Process

  • 期刊论文

  • 发表日期：

    2025年1月11日

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  • Harinadh Vemanaboina,
  • Balram Yelamasetti,
  • Jayaprakash Sharma Panchagnula,
  • Naveen Kilari,
  • Chander Prakash,
  • Sandeep Kumar,
  • Husain Mehdi

摘要

In this study, the Gaussian heat flux source was used for thermal analysis to estimate the effect of heat input in the C-276 weldments. The L4 design of experiments was used for both simulation and experimentation; the experiments were carried out using the CO2 laser beam welding process. In thermal analysis, the maximum temperature at the fusion zone, and the resulting residual stresses were verified with experimentation. The weld joints were found to be free from defects verified with optical and scanning electron microscopy. The micro-segregation occurring in the joints was investigated using energy-dispersive X-ray spectroscopy (EDS). Factor of safety was more than 1.0 in all the samples compared to the base material tensile strength. Tensile tests confirmed that the strength of the weld zone is higher than that of the parent metals.