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<p>The effect of the cooling medium during quenching on the mechanical properties of TIG welded joints made of low-carbon, low-alloy high-strength bainitic steel 15CDV6 was studied. Air, water, sand and oil were used as the quenching medium. The tensile strength of welded joints quenched in oil was found to be the highest of the four media. However, the yield strength of welded joints is greatest after quenching in water. The highest value of the relative elongation of the joint is achieved after quenching in oil; after quenching in air and in sand, its values are lower and almost identical due to the relatively slow cooling rate; and after quenching in water —– the lowest. It has been shown that oil quenching is the most effective for ensuring a high complex of mechanical properties of welded joints made of 15CDV6 steel.</p>

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Impact of Quenching Medium on Tensile Properties and Hardness of 15CDV6 TIG Welded Joints

  • 期刊论文

  • 发表日期：

    2025年3月1日

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  • Atif Shazad,
  • Muhammad Uzair

摘要

The effect of the cooling medium during quenching on the mechanical properties of TIG welded joints made of low-carbon, low-alloy high-strength bainitic steel 15CDV6 was studied. Air, water, sand and oil were used as the quenching medium. The tensile strength of welded joints quenched in oil was found to be the highest of the four media. However, the yield strength of welded joints is greatest after quenching in water. The highest value of the relative elongation of the joint is achieved after quenching in oil; after quenching in air and in sand, its values are lower and almost identical due to the relatively slow cooling rate; and after quenching in water —– the lowest. It has been shown that oil quenching is the most effective for ensuring a high complex of mechanical properties of welded joints made of 15CDV6 steel.