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Applications requiring high strength stainless steels are growing at a faster pace. Typical alloys used for these applications are either highly alloyed metals or that materials require a secondary heat-treatment process. Newly dual-phase steels are has been developed as a lower-cost option. The microstructure of dual-phase steels consists of a mixture of ferrite and martensite. A unified study on mechanical characterization of Metal inert gas (MIG) welding of Dual-phase (DP) steels for structural applications in mind has been reported here. The results indicate that as the hardness of the metal increases as the percentage of martensite content increases, there has been a significant increase in the ultimate tensile strength, yield strength, impact strength and percentage of elongation. Further it has been found that the microstructure of the base material has a bearing on the mechanical behavior exhibited by the weldments. The mechanical properties of the welded joints were found to be comparable with mechanical properties of the base metal.

This article is published in peer review journal and open access journal, International journal of research in engineering and innovation (IJREI) which have a high impact factor journal for more details regarding this article, please go through our journal website.


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