The Investigation and Comparison of Friction Stir Spot Welding and Electrical Resistance Spot Welding of AA2024 Aluminium Alloy Joints

Yıl 2019, Cilt: 3 Sayı: 1, 52 - 58, 27.06.2019

Yahya Bozkurt , Adnan Türker Gamze Soytemiz Serdar Salman

Öz

Both
Friction Stir Spot Welding (FSSW) and Electrical Resistance Spot Welding (ERSW)
are contemporary techniques for joint of the thin sheet materials. But FSSW is
more modern technique than RSW. FSSW is used a lot of area which are from
marine to aerospace industries. Aluminium alloy has a lot of advantages of the
other materials. One of them is weight. In this study, AA2024 sheets are chosen
for FSSW and RSW joint. FSSW is effected with tool rotational speed, tool
transverse speed, dwell time and tool plunge depth. Two sheets were joined
under the tool rotational speed for 1040 rpm and dwell time for 10 second. The same
samples joints with under RSW for 39 kA and dwell time for 0.5 second. These
parameters are optimized for both welding techniques. Afterwards FSSW and RSW
are compared about lap shear tensile test for aluminum alloy joints with plane
thickness of 1.6 mm. So that FSSW is more suitable joining process than ERSW.
As a results of test and analyses are showed that FSSW is better mechanical
properties than RSW. Eventually, These results are verified by many experiments. 

Anahtar Kelimeler

Friction Stir Spot Welding, Electrical Resistance Spot Welding, Aluminium alloys, Mechanical properties

Kaynakça

• [1]. M. H. Coşkun, ‘’Otomotiv endüstrisinde kullanılan AN 7114 ve Dp600 Çelik Sacların Direnç Nokta Kaynağı (RSW) ve Sürtünme Karıştırma Nokta Kaynağı (FSSW) Yöntemleri ile Birleştirilmesi,’’ Kocaeli Unv. Fen Bil. Enst., 2009. [2]. A.Bilal, ‘’AA 2024-T3 Alüminyum Alaşımının Sürtünme Karıştırma Kaynağında İşlem Parametrelerinin Mikroyapı ve Mekanik Özelliklere Etkileri,’’ Osmangazi Unv. Fen Bil. Enst., 2006. [3]. G. Çam, ‘’Sürtünme Karıştırma Kaynağı Uygulamalarında Son Gelişmeler,’’ Kaynak Tekn. VI. Kongre ve Sergisi Bildiriler Kitabı, TMMOB Makine Mühendisleri Odası, 2007, p. 449, 42. [4]. http://mechanicalinventions.blogspot.com.tr/2014/09/resistance-spot-welding-rsw-working-principle.html[5]. R.S. Mishra, M.W. Mahoney, ‘’Friction Stir Spot Welding, American Society for Metals,’’ 2007, pp. 235-250.[6]. D. A. Wang and S. C. Lee, ‘’Microstructures and failure mechanisms of friction stir spot welds of aluminum 6061-T6 sheets,’’ J. Mater. Process. Technol., 2007, 186291-297.[7]. M. K. Bilici and A. I. Yukler, ‘’Effects of welding parameters on friction stir spot welding of high density polyethylene sheets,’’ Mater. Des., 2012, 33, 545–550.[8]. [8]. R. Sakano, K. Murakami, K.Yamashita, T. Hyoe, M. Fujimoto, M. Inuzuka, U. Nagao, H. Kashiki, “Development of spot FSW robot system for automobile body members,’’ Proceedings of the Third Int. Symposium of Friction Stir Welding,’’ Kobe, Japan, 2001.[9]. T. Iwashita, Method and apparatus for joining, US Patent Issued on August 5, 2003. [10]. R. Hancock, ‘’Friction stir spot welding on similar aluminum alloys al6082 by using different shape of en19 and en 31 profile tool,’’ Welding journal, 2004, 40-43.[11]. "Mazda Develops World's First Aluminum Joining Technology Using Friction Heat", Mazda media release, February 27, 2003.[12]. C. B. Fuller, in: R.S. Mishra, M.W. Mahoney (Eds.), Friction Stir Welding and Processing, ASM International, Ohio, 2007, pp. 7-35.[13]. S. Aslanlar, ‘’The Effect of Nucleus Size on Mechanical Properties in Electrical Resistance Spot Welding of Sheets Used in Automotive Industry,’’ Materials and Design, 2006, 27, pp.125-131.[14]. P. Gupta, P.K. Ghosh, S.K. Nath and S. Ray, “Resistance spot weldability of plain carbon and low alloy dual phase steels”, Z. Metallkde., 1990, 81,7, pp. 502-508. [15]. P. Sharma, P.K. Ghosh and S.K. Nath, “Studies on fatigue behaviour of resistance spot welded Mn-Cr-Mo dual phase steel”, Z. Metallkunde, 1993, 84, 7, pp. 513-517.[16]. M. Vural and A.Akkus, ‘’On the resistance spot weldability of galvanized interstitial free steel sheets with austenitic stainless steel sheets,’’ J. Mater. Process. Technol., 2004, 153-1.[17]. M.Vural, A.Akkus and B. Eryurek, ‘’Analysis of Process Parameters for Resistance Spot Welding on Cold Reduced Low Carbon Steel,’’ J. Mater. Process. Technol., 2006, 176-127.[18]. F. Hayat, B. Demir and M. Acarer, ‘’Tensile shear stress and microstructure of low-carbon dual-phase Mn-Ni steels after spot resistance welding,’’ Sci. Heat Treat., 2007, 49 484.[19]. P. Zhang, J. Xie, Y.X.Wang and J.Q. Chen, ‘’Effects of welding parameters on mechanical properties and microstructure of resistance spot welded DP600 joints,’’ Sci. Technol. Weld. Join., 2011, 16-567.[20]. Y. Tozaki, Y. Uematsu, K. Tokaji, ‘’Effect of Processing Parameters on Static Strength of Dissimilar Friction Stir Spot Welds Between Different Aluminium Alloys Fatigue,’’ Fract. Engng. Mater. Struct., 2007, 30 , pp.143-148.[21]. B.R. Singh, A handbook on Friction stir welding Research Gate, DOI/10.13140/RG.2.1.5088.6244 (2012).[22]. Z. Zhang, X. Yang, J. Zhang, G. Zhou, X. Xu, B. Zou, ‘’Effect of Welding Parameters on Microstructure and Mechanical Properties of Friction Stir Spot Welded 5052 Aluminum Alloy,‘’ Materials and Design, 2011, 32, pp.4461-4470.