{"title":"Impact of Quenching Medium on Tensile Properties and Hardness of 15CDV6 TIG Welded Joints","authors":"Atif Shazad, Muhammad Uzair","doi":"10.1007/s11041-025-01106-9","DOIUrl":null,"url":null,"abstract":"<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>","PeriodicalId":701,"journal":{"name":"Metal Science and Heat Treatment","volume":"66 11-12","pages":"701 - 707"},"PeriodicalIF":0.5000,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Metal Science and Heat Treatment","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11041-025-01106-9","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
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Abstract
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.
期刊介绍：
Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering.
Topics covered include:
New structural, high temperature, tool and precision steels;
Cold-resistant, corrosion-resistant and radiation-resistant steels;
Steels with rapid decline of induced properties;
Alloys with shape memory effect;
Bulk-amorphyzable metal alloys;
Microcrystalline alloys;
Nano materials and foam materials for medical use.
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