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Abstract <p>The development of several defects such as hydrogen embrittlement, solidification cracks, porosity, blowholes, and undesirable metallurgical changes that occur in fusion welding can be elegantly mitigated by lowering the peak temperature in underwater friction stir welding. Therefore, this article delves into the effect of tool rotational speed on mechanical properties as well as the microstructural evolution of underwater friction stir welded AA1100-H18. Mechanical properties such as Rockwell hardness, tensile test and impact test as well as microstructural analysis through optical micrograph and scanning electron microscope were analyzed. The results showed that grains are refined and properties get enhanced at optimum rotational speed.</p>

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Experimental Investigation of Underwater Friction Stir Welded AA1100: Effect of Rotational Speed

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • Ayush Verma,
  • Chhaviyush Kusumakar,
  • Sahil Gupta,
  • Abhishek Upadhyay,
  • Arvind Meena,
  • Sachin Maheshwari,
  • Pooja Dwivedi

摘要

Abstract

The development of several defects such as hydrogen embrittlement, solidification cracks, porosity, blowholes, and undesirable metallurgical changes that occur in fusion welding can be elegantly mitigated by lowering the peak temperature in underwater friction stir welding. Therefore, this article delves into the effect of tool rotational speed on mechanical properties as well as the microstructural evolution of underwater friction stir welded AA1100-H18. Mechanical properties such as Rockwell hardness, tensile test and impact test as well as microstructural analysis through optical micrograph and scanning electron microscope were analyzed. The results showed that grains are refined and properties get enhanced at optimum rotational speed.