@article{MAKHILLJEAS2018131716765,
    title = {Microstructure and Mechanical Properties of DC-LSND Double
Cooling on A-36 Steel Welded Joints},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {13},
    number = {17},
    pages = {7341-7347},
    year = {2018},
    issn = {1816-949x},
    doi = {jeasci.2018.7341.7347},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2018.7341.7347},
    author = {H.,M.N. and},
    keywords = {DC-LSND double cooling,welded joints,distortion,liquid nitrogen,microstructure,refined},
    abstract = {The use of certain welding techniques to reduce distortion in the welding of thin plates to the hull
of a ship has become one of the most recent objects of research. One of the alternative welding techniques
developed is called the DC-LSND (Dynamically Controlled Low Stress No-Distortion) technique. The
investigation concerned here was aimed at studying the effect of DC-LSND double cooling on the distortion,
microstructure and mechanical properties in A36 steel welded joints. The DC-LSND double cooling treatments
were performed by cooling the HAZ (Heat Affected Zone) behind the welding torch by using cryogenic liquid
nitrogen. A sequence of tests was carried out involving distortion measurement, microstructure examination,
hardness measurement and tensile testing in combination with SEM fractography. The results showed
that DC-LSND double cooling treatments affected transverse distortion significantly. The strength of the
welded joint was improved by the DC-LSND double cooling treatments, based on the results of the tensile
testing and the hardness. The microstructure was also refined by increasing the acicular ferrite phase.}
    }