Wafa MELİK, Zakaria BOUMERZOUG, Fabienne DELAUNOİS

FABRICATION AND WELDING OF ALUMINUM COMPOSITE

In recent years, aluminum alloy-based metal matrix composites (MMC) are gaining importance in several aerospace and automobile applications. Aluminum 6061 has been used as matrix material owing to its excellent mechanical properties coupled with good formability. In the present investigation Al6061–SiCp composites was fabricated by powder metallurgy route with 7.5 and 13 wt. % of SiCp and sintered at 600°C during 2 h. The synthesis samples were welded in solid state by bonding diffusion at 520 °C during 3 h. The effect of SiCp amount on structural and mechanical properties of welded joint of Al matrix was investigated. The main techniques of characterization were optical and scanning electronic microscopy, X ray diffraction, and hardness measurements. We have found the effect of silicon carbide quantity on the hardness of the synthesized composite. The microstructure observations showed a homogeneous distribution of SiCp on the welded joint

Keywords:

Al matrix composite (AMCs), Silicon carbide SiC Powder metallurgy, Bonding diffusion, Welded joint,

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1. Mosleh-shirazi, S., Akhlaghi, F., and Dong-yang, L., Effect of SiC content on dry sliding wear, corrosion and corrosive wear of Al/SiC nanocomposites, Transactions of nonferrous metals society of China,2016,26(7):1801-1808.
2. Vigneshwara, M., Selvamania, S.T., Taruna, K., and Palanikumar, K., A novel approach for joining armor grade AA7075 metal matrix nano composites using various welding processes, Materials today: proceedings, 2019, 16(2):1175–1181.
3. El-Kady, O., and Fathy, A., Effect of SiC particle size on the physical and mechanical properties of extruded Al matrix nanocomposites, Materials and design, 2014, 54:348–353.
4. Abd El-Aziz, K., Saber, D., and Sallam, H. E.M., Wear and corrosion behavior of Al–Si matrix composite reinforced with alumina, Journal of bio- and tribo-corrosion, 2015, 1(5):1-10.
5. Penchal Reddy, M., Shakoor, R.A., Parande, G., Manakari, V., Ubaid, F., Mohamed, A.M.A., and Gupt, M., Enhanced performance of nano-sized SiC reinforced Al metal matrix nanocomposites synthesized through microwave sintering and hot extrusion techniques, Progress in natural science: materials international,2017, 27:606–614.
6. RahimianM., EhsaniN., Parvin N., and BaharvandiH.R., the effect of particle size, sintering temperature and sintering time on the properties of Al–Al2O3 composites, made by powder metallurgy, Journal of materials processing technology,2009,209:5387–5393.
7. Kalaiselvan, K. Dinaharan, I. and Murugan, N. Characterization of friction stir welded boron carbide particulate reinforced AA6061 aluminum alloy stir cast composite, Materials and design, Vol. 55, (2014) , pp.176–182.
8. Shankar,M. C. G., Jayashree,P. K., Sharma,S. S., Shetty, R., and Vinay,K., Quality enhancement of TIG welded Al6061 SiCp composites by age hardeningprocess, International journal of automotive and mechanical engineering,2018, 15(3): 5573-5582. 9. Rotundo, F., Marconi, A., Morri, A. ,and Ceschini, A., Dissimilar linear friction welding between a SiC particle reinforced aluminum composite and a monolithic aluminum alloy: microstructural, tensile and fatigue properties, Materials science andengineering A,2013, 559:852–860.
10. Hascalik, A., and Orhan, N., Effect of particle size on the friction welding of Al2O3 reinforced 6160 Al alloy composite and SAE 1020steel, Materials and design,2007, 28(1):313-317.
11. Rotundo, F., Ceschini, L., Morri, A., Jun, T.S., and Korsunsky, A.M., Mechanical and microstructural characterization of 2124Al/25 vol.%SiCp joints obtained by linear friction welding (LFW), Composites part A: Applied science and manufacturing,2010, 41(9):1028-1037.
12. Feng, A.H., Xiao, B.L., and Ma, Z.Y., Effect of microstructural evolution on mechanical properties of friction stir welded AA2009/SiCp composite, Composites Science and Technology, 2008, 68(9):2141–2148.
13. Kothari, M. A., and Hung,W. N.P., Suppressing aluminum carbide in welding aluminum silicon carbide, composite, International journal of engineering materials and manufacture, 2018, 3(1) :41-54.
14. Veeresh Kumar G.B., Rao C.S.P., Selvaraj N., Bhagyashekar M.S.,Studies on Al6061-SiC and Al7075-Al2O3. Journal of minerals and materials characterization and engineering, 2010, 9(1): 43-55.