Experimental Study and Analysis of Friction Stir Welding on Az-91Mg Alloy by using SEM
Experimental Study and Analysis of Friction Stir Welding on Az-91Mg Alloy by using SEM
|© 2022 by IJETT Journal|
|Year of Publication : 2022|
|Authors : M. Yugandhar, B. Prabhakar Kammar, S. Nallusamy
|DOI : 10.14445/22315381/IJETT-V70I10P213|
How to Cite?
M. Yugandhar, B. Prabhakar Kammar, S. Nallusamy, "Experimental Study and Analysis of Friction Stir Welding on Az-91Mg Alloy by using SEM," International Journal of Engineering Trends and Technology, vol. 70, no. 10, pp. 111-123, 2022. Crossref, https://doi.org/10.14445/22315381/IJETT-V70I10P213
Due to the extremely reactive nature of Magnesium (Mg) alloys, fusion welding is complicated. In the presence of oxygen, magnesium quickly oxidized. As a result, solid-state fusion welding procedures are the ideal approaches for welding Mg alloys. In this research, AZ-91 Mg alloy sheets were bonded by Friction Stir Welding (FSW), and the joint quality was tested using microstructural investigations and microhardness measures. According to the findings, the joint was defect-free, and the size of the huge intermetallic that emerged in the base alloy was reduced. These findings point to Al dissolution in an Mg matrix. Micro hardness tests demonstrate the enhanced hardness in the weld zone caused by the FSW. The purpose of this article was to provide the findings of the butt joint quality of FSW samples of MgAlZn group alloys. Welding was done using the FSW tool at speeds ranging from 140 mm/min to 355mm/min. There is no porosity or cracking in the stir zone or its surroundings. As a result of the high grain refinement and enhanced precipitations at the grain boundaries, microhardness in the stir zone increased for all welds compared to the base metals. Metal plastic characteristics are likely to decline in certain locations. The findings indicate a substantial link between joint characteristics and welding conditions.
Magnesium alloys, Friction stir welding, AZ9, Microstructure, Tensile examination, SEM.
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