• Prathamesh Patil
• Pranav Pawar
• Pranav Yende
• Anuj Tote

Dissimilar friction stir welding of Al 7075 and Mg AZ31 are performed in a view to develop a defect free weld. The paper deals with generating sound weld by avoiding formation of intermetallic compounds (IMC) voids, tunnel defect, improper mixing of metals which detoriates the weld intergrity.In this paper, variation of two process parameters such as tool rotation speed (rpm) and tool traverse (mm/min) are carried out.Out of these parameters, a unique combination was evaluated for better mechanical properties.Study further involves designing of truncated conical tools with threads and designing of jigs and fixtures to carry out welding process.To verify quality of welds different mechanical properties such as tensile strength, hardness, percentage elongation are observed by performing different test on welded specimen Moreover, microstructure of the welded portion is characterized on SEM to have uniform voids free and fine grained microstructure.A trade of between tensile strength and ductility can be gained by forming a fine grain structure.

"Microstructure Characterization and Testing of Aluminum 7075 and Magnesium AZ31B FSW Butt Joint", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.157-163, April-2019, Available :http://www.jetir.org/papers/JETIRBB06035.pdf

"Microstructure Characterization and Testing of Aluminum 7075 and Magnesium AZ31B FSW Butt Joint", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp157-163, April-2019, Available at : http://www.jetir.org/papers/JETIRBB06035.pdf