Scholarlink

<p>Zircaloy-2 is a zirconium-based alloy widely used in nuclear reactor components due to its excellent corrosion resistance, mechanical strength, and low neutron absorption. Its welding performance is critical for ensuring structural integrity in high-temperature environments. This study focuses on the welding of Zircaloy-2 pipes, optimizing process parameters to achieve high-quality joints. Fracture mechanics analysis was conducted to evaluate Mode I fracture strength (<i>K</i><sub><i>I</i></sub>) of both parent and weld specimens using single-edge notch tensile test, complemented by experimental and extended finite element method (XFEM) analysis. Results indicate that weld specimen exhibits a 31.8% higher <i>K</i><sub><i>I</i></sub> than parent specimen. The <i>K</i><sub><i>I</i></sub> of welded specimen is found to be 46.08&#xa0;<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\text{MPa}\sqrt{m}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mtext>MPa</mtext> <msqrt> <mi>m</mi> </msqrt> </mrow> </math></EquationSource> </InlineEquation>(experimentally) and 40.35&#xa0;<InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\text{MPa}\sqrt{m}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mtext>MPa</mtext> <msqrt> <mi>m</mi> </msqrt> </mrow> </math></EquationSource> </InlineEquation> (XFEM analysis). Around 16% increase in <i>K</i><sub><i>I</i></sub> is observed in weld specimen from parent specimen. A strong correlation was observed between experimental observation and numerical predictions, demonstrating the reliability of the adopted approach. These findings provide valuable insights for structural applications where Zircaloy-2 is extensively used in various industrial application.</p>

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

Microstructure and Evaluation of Fracture Strength on Metal Inert Gas Welded Zircaloy Pipe: Experiment and Simulation

  • 期刊论文

  • 发表日期：

    2025年10月9日

查看全文
  • Sivaraj Subramaniyan,
  • Babu Narayanasamy,
  • Mohan Kumar Subramaniyan

摘要

Zircaloy-2 is a zirconium-based alloy widely used in nuclear reactor components due to its excellent corrosion resistance, mechanical strength, and low neutron absorption. Its welding performance is critical for ensuring structural integrity in high-temperature environments. This study focuses on the welding of Zircaloy-2 pipes, optimizing process parameters to achieve high-quality joints. Fracture mechanics analysis was conducted to evaluate Mode I fracture strength (KI) of both parent and weld specimens using single-edge notch tensile test, complemented by experimental and extended finite element method (XFEM) analysis. Results indicate that weld specimen exhibits a 31.8% higher KI than parent specimen. The KI of welded specimen is found to be 46.08  \(\text{MPa}\sqrt{m}\) MPa m (experimentally) and 40.35  \(\text{MPa}\sqrt{m}\) MPa m (XFEM analysis). Around 16% increase in KI is observed in weld specimen from parent specimen. A strong correlation was observed between experimental observation and numerical predictions, demonstrating the reliability of the adopted approach. These findings provide valuable insights for structural applications where Zircaloy-2 is extensively used in various industrial application.