Volume 16, Issue 2 (4-2016)                   Modares Mechanical Engineering 2016, 16(2): 206-214 | Back to browse issues page

‎ 20.1001.1.10275940.1395.16.2.34.9

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Zamani M H, Divandari M, Tamizifar M. Investigation of relationship between mechanical and interface properties in dissimilar welding of aluminum and magnesium by friction stir welding. Modares Mechanical Engineering 2016; 16 (2) :206-214
URL: http://mme.modares.ac.ir/article-15-10957-en.html
Investigation of relationship between mechanical and interface properties in dissimilar welding of aluminum and magnesium by friction stir welding
Mohammad Hasan Zamani1 , Mehdi Divandari * 2, Morteza Tamizifar1
1- Iran University of science and Technology
2- Iran University of Science and Technology
Abstract:   (4628 Views)
Increasing usage of magnesium and aluminum light metals in the transportation industry has made joining of these two metals one of the challenges for researchers and engineers. The aim of this study was to investigate the relationship between mechanical properties of lap friction stir welded Al-Mg plates and characteristics of the interface. Therefore, joining of aluminum and magnesium in various conditions were conducted. Optical and scanning electron microscopy analysis, micro-hardness test and tensile tests were performed on samples. The results showed that in the joints which Mg was on top, approximately 10 micron thick layer of intermetallic compounds is created, while in the Al-top joints, approximately 1 mm thick intermetallic compounds with solidified microstructure was visible. Mechanical test showed Mg-top joint have higher strength in comparison with Al-top joint. On the other hand hardness test of Mg-top joint showed more fluctuation than Al-top joint. Microstructural investigation also showed that in the Mg-top joint, formation mechanism of intermetallic compounds has occurred in solid state while in the Al-top joint, in addition to diffusion in solid state, eutectic formation in the molten state and solidification has occurred.
Keywords: Friction Stir Welding (FSW), Intermetallic compounds, Mechanical Properties, Aluminum, magnesium
Full-Text [PDF 1353 kb]   (4660 Downloads)    
Article Type: Research Article | Subject: Welding
Received: 2015/11/1 | Accepted: 2016/01/24 | Published: 2016/02/14
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