The Effect of Tool Rotation Speed on Mechanical Properties of Friction Stir Spot Welded (FSSW) AA7075-T6 Aluminium Alloy Sheets

Yıl 2019, Cilt: 3 Sayı: 3, 97 - 101, 20.09.2019

Mustafa Uğurlu Ahmet Çakan

https://doi.org/10.26701/ems.520139

Cited By: 4

Öz

In this study, the effect of tool rotation speed on the mechanical and
metallurgical properties of friction stir spot welded (FSSW) AA 7075-T6
aluminum alloy plates was investigated. Aluminum alloy plates were joined by FSSW
using welding parameters consisting of three different rotation speeds of 1040,
1320 and 1500 rpm and a constant insertion depth of 3.2 mm. In spot welded specimens,
the highest tensile strength value (6200 N) was obtained in plates welded at a tool
rotation speed of 1500 rpm. The data obtained from the metallographic analysis
are compatible with the tensile test results. Metallographic investigations
demonstrated that there was a small amount of porosity in the welding zone of
the specimens jointed at 1500 rpm.

Anahtar Kelimeler

Solid state welding, Friction stir spot welding, Mechanical properties, AA 7075-T6

Kaynakça

• Jedrasiak, P., Shercliff, H.R., Reilly, A., McShane, G.J., Chen, Y.C., Wang, L., Robson, J., Prangnell, P. (2016). Thermal modeling of al-al and al-steel friction stir spot welding. Journal of Materials Engineering and Performance, 25(9): 4089-4098, DOI: 10.1007/s11665-016-2225-y.
• Rostamiyan, Y., Seidanloo, A., Sohrabpoor, H., Teimouri, R. (2015). Experimental studies on ultrasonically assisted friction stir spot welding of AA6061. Archives of Civil and Mechanical Engineering, 15(2): 335-346, DOI: 10.1016/j.acme.2014.06.005.
• Tutar, M., Aydin, H., Yuce, C., Yavuz, N., Bayram, A. (2014). The optimisation of process parameters for friction stir spot-welded AA3003-H12 aluminium alloy using a taguchi orthogonal array. Materials and Design, 63: 789-797, DOI: 10.1016/j.matdes.2014.07.003.
• Su, Z.M., He, R.Y., Lin, P.C., Dong, K. (2014). Fatigue analyses for swept friction stir spot welds in lap-shear specimens of alclad 2024-T3 aluminum sheets. International Journal of Fatigue, 61: 129-140, DOI: 10.1016/j.ijfatigue.2013.11.021.
• Wang, D.A., Lee, S.C. (2007). Microstructures and failure mechanisms of friction stir spot welds of aluminum 6061-t6 sheets. Journal of Materials Processing Technology, 186(1-3): 291-297, DOI: 10.1016/j.jmatprotec.2006.12.045.
• Cakan, A., Atmaca, H., Ugurlu, M. (2018). Analysis and joining of al–cu plates using friction-stir welding technique. European Mechanical Science, 2(1): 1-8, DOI: 10.26701/ems.358729.
• Yazdipour, A., Heidarzadeh, A. (2016). Effect of friction stir welding on microstructure and mechanical properties of dissimilar Al 5083-H321 and 316L stainless steel alloy joints. Journal of Alloys and Compounds, 680: 595-603, DOI: 10.1016/j.jallcom.2016.03.307.
• Sinha, V.C., Kundu, S., Chatterjee, S. (2016). Microstructure and mechanical properties of similar and dissimilar joints of aluminium alloy and pure copper by friction stir welding. Perspectives in Science, 8: 543-546, DOI: 10.1016/j.pisc.2016.06.015.
• Cam, G., Serindag, H.T., Cakan, A., Mistikoglu, S., Yavuz, H. (2008). The effect of weld parameters on friction stir welding of brass plates. Materialwissenschaft und Werkstofftechnic, 39(6): 394-399, DOI: 10.1002/mawe.200800314.
• Cam, G., Gucluer, S., Cakan, A., Serindag, H.T. (2009). Mechanical properties of friction stir butt-welded Al-5086 H32 plate. Materialwissenschaft und Werkstofftechnic, 40(8): 638-642, DOI: 10.1002/mawe.200800455.
• Uzun, H., Donne, C.D., Argagnotto, A., Ghidini, T., Gambaro, C. (2005). Friction stir welding of dissimilar Al 6013-T4 to X5CrNi18-10 stainless steel. Materials and Design, 26(1): 41-46, DOI: 10.1016/j.matdes.2004.04.002.
• Shen, Z., Yang, X., Zhang, Z., Cui, L., Li, T. (2013). Microstructure and failure mechanisms of refill friction stir spot welded 7075-T6 aluminum alloy joints. Materials and Design, 44: 476-486, DOI: 10.1016/j.matdes.2012.08.026.
• Zhang, Z., Yang, X., Zhang, J., Zhou, G., Xu, X., Zou, B. (2011). Effect of welding parameters on microstructure and mechanical properties of friction stir spot welded 5052 aluminum alloy. Materials and Design, 32(8-9): 4461-4470, DOI: 10.1016/j.matdes.2011.03.058.
• Shen, J., Min, D., Wang, D. (2011). Effects of heating process on the microstructures and tensile properties of friction stir spot welded AZ31 magnesium alloy plates. Materials and Design, 32(10): 5033-5037, DOI: 10.1016/j.matdes.2011.05.046.
• Tozakia, Y., Uematsub, Y., Tokaji, K. (2010). A newly developed tool without probe for friction stir spot welding and its performance. Journal of Materials Processing Technology, 210(6-7): 844-851, DOI: 10.1016/j.jmatprotec.2010.01.015.
• Luo, T., Shı, B., Duan, Q., Fu, J., Yang, Y. (2013). Fatigue behavior of friction stir spot welded AZ31 Mg alloy sheet joints. Transactions of Nonferrous Metals Society of China, 23(7): 1949-1956, DOI: 10.1016/S1003-6326(13)62682-5.
• Sun, Y., Fujii, H., Zhua, S., Guan, S. (2019). Flat friction stir spot welding of three 6061-T6 aluminum sheets. Journal of Materials Processing Technology, 264: 414-421, DOI: 10.1016/j.jmatprotec.2018.09.031.
• Babu, S., Sankar, V., Ram, G.J., Venkitakrishnan, P., Reddy, G.M., Rao, K.P. (2013). Microstructures and mechanical properties of friction stir spot welded aluminum alloy AA2014. Journal of Materials Engineering and Performance, 22(1): 71–84, DOI: 10.1007/s11665-012-0218-z.
• Merzoug, M., Mazari, M., Berrahal, L., Imad, A. (2010). Parametric studies of the process of friction spot stir welding of aluminium 6060-T5 alloys. Materials and Design, 31(6): 3023-3028, DOI: 10.1016/j.matdes.2009.12.029.
• Cao, X., Jahazi, M. (2011). Effect of tool rotational speed and probe length on lap joint quality of a friction stir welded magnesium alloy. Materials and Design, 32(2011): 1-11, DOI: 10.1016/j-matdes.2010.06.048.
• Zhang, Z., Yang, X., Zhang, J., Zhou, G., Xu, X., Zou, B. (2011). Effect of welding parameters on microstructure and mechanical properties of friction stir spot welded 5052 aluminium alloy. Material and Design, 32(2011): 4461-4470, DOI: 10.1016/j.matdes.2011.03.058.
• Gerlich, A., Su, P., Yamamoto, M., North, T. H. (2007), Effect of welding parameters on the strain rate and microstructure of friction stir spot welded 2024 aluminum alloy. Journal of Materials Science, 42: 5589–5601, DOI: 10.1007/s10853-006-1103-7.
• Bozzi, S., Helbert-Etter, A. L., Baudin, T., Klosek, V., Kerbiguet, J. G., Criqui, B. (2010). Influence of FSSW parameters on fracture mechanisms of 5182 aluminium welds. Journal of Materials Processing Technology, 210(11): 1429-1435, DOI: 10.1016/j.jmatprotec.2010.03.022. Paidar, M., Khodabandeh, A., Najafi, H., Rouh-aghdam, A. S. (2014). Effects of the tool rotational speed and shoulder penetration depth on mechanical properties and failure modes of friction stir spot welds of aluminum 2024-T3 sheets. Journal of Mechanical Science and Technology, 28(12): 4893-4898. DOI: 10.1007/s12206-014-1108-0.
• Patel, V. V., Sejani, D. J., Patel, N. J., Vora, J. J., Gadhvi, B. J., Padodara, N. R., Vamja, C. D. (2016). Effect of tool rotation speed on friction stir spot welded AA5052-H32 and AA6082-T6 dissimilar aluminum alloys. Metallography, Microstructure, and Analysis, 5(2): 142-148, DOI: 10.1007/s13632-016-0264-2.
• Venukumar, S., Yalagi, S., Muthukumaran S. (2013). Comparison of microstructure and mechanical properties of conventional and refilled friction stir spot welds in AA 6061-T6 using filler plate. Transactions of Nonferrous Metals Society of China, 23(2013): 2833-2842, DOI: 10.1016/S1003-6326(13)62804-6.
• Yuan, W., Mishra, R. S., Webb, S., Chen, Y. L., Carlson, B., Herling, D. R., Grant, G. J. (2010). Effect of tool design and process parameters on properties of Al alloy 6016 friction stir spot welds. Journal of Materials Processing Technology, 211(2011): 972-977, DOI: 10.1016/j.jmatprotec.2010.12.014.