Investigation of the Effects of Welding Force, Vibration and Temperature on Mechanical Properties and Microstructure in FSW Welding

Öz

Investigation of the Effects of Welding Force, Vibration and Temperature on Mechanical Properties and Microstructure in FSW Welding

Öz

Defects such as porosity and cracking are serious problems in the joining of aluminium and its alloys by melt welding methods. In this case, it is important that the aluminum pairs are welded by friction stir welding (FSW), which is depend on joining at a temperature below the melting temperature by means of a stirrer pin. In this study, AA5182 pairs were joined in the different welding parameters by FSW. The effects of tool pin profily, feed rate and rotation speed on the temperature, force and vibration formed during welding were experimentally investigated. As the rotation speed rised, the temperature increased and the welding force decreased. But, with increasing feed rate, the temperature decreased and welding force and vibration have increased. Mechanical properties of the joints were adversely affected by low temperature, high welding force and high vibration.

Anahtar Kelimeler

• Fatigue
• FSW
• Tensile Force
• Welding Force
• Vibration

Kaynakça

1. [1] Gungor B., Kaluc E., Taban E. and Sik A., “Mechanical, fatigue and microstructural properties of friction stir welded 5083-H111 and 6082-T651 aluminum alloys”, Materials & Desing, 56, 84–90 (2014).
2. [2] Hua P., Mironov S., Sato T.S., Kokawa H., Park S.H.C. and Hirano S., “Crystallography of martensite in friction- stir-welded 12Cr heat-resistant steel”, Metallurgical and Materials Transactions A, 50 (7), 3158-3163 (2019).
3. [3] Thomas W.M. and Nicholas E.D., “Friction stir welding for the transportation industries”, Materials & Desing, 18 (4/6), 269-273 (1997).
4. [4] Moreira P.M.G.P., de Figueiredo M.A.V. and de Castro P.M.ST., “Fatigue behaviour of FSW and MIG weldments for two aluminium alloys”, Theoretical and Applied Fracture Mechanics, 48 (2), 169–177 (2007).
5. [5] Cetkin E., Çelik Y.H. and Temiz S., “Microstructure and mechanical properties of AA7075/AA5182 jointed by FSW”, Journal of Materials Processing Technology, 268, 107-116 (2019).
6. [6] Elangovan K., Balasubramanian V. and Valliappan M., “Effect of tool pin profile and tool rotational speed on mechanical properties of friction stir welded AA6061 aluminium alloy”, Materials and Manufacturing Processes, 23 (3), 251-260 (2008).
7. [7] Feng X., Liu H. and Lippold J.C., “Microstructure characterization of the stir zone of submerged friction stir processed aluminum alloy 2219”, Materials Characterization, 82, 97-102 (2013).
8. [8] Taban E. and Kaluc E., “Microstructural and mechanical properties of double-sided MIG, TIG and friction stir welded 5083-H321aluminium alloy”, Kovove Materialy, 44 (1), 25–33 (2006).

9. [9] Mahoney M.W., Rhodes C.G., Flintoff J.G., Spurling R.A. and Bingel W.H., “Properties of friction-stir-welded 7075 T651 aluminum”, Metall. Metallurgical and Materials Transactions A, 29 (7), 1955-1964 (1998).
10. [10] Liu H.J., Fujii H., Maeda M. and Nogi K., “Tensile properties and fracture locations of friction-stir-welded joints of 2017-T351 aluminum alloy”, Journal of Materials Processing Technology, 142 (3), 692–696 (2003).
11. [11] Eslami S., Mourão L., Viriato N., Tavares P.J. and Moreira P.M.G.P., “Multi-axis force measurements of polymer friction stir welding”, Journal of Materials Processing Technology, 256, 51-56 (2018).
12. [12] Jain R., Pal S.K. and Singh S.B.A., “Study on the variation of forces and temperature in a friction stir welding process: A finite element approach”, Journal of Manufacturing Processes, 23, 278-286 (2016).
13. [13] Trimble D., O’Donnell G.E. and Monoghan J., “Characterisation of tool shape and rotational speed for increased speed during friction stir welding of AA2024-T3”, Journal of Manufacturing Processes, 17, 141-150 (2015).
14. [14] Amini S. and Amiri M.R., “Pin axis effects on forces in friction stir welding process”, International Journal of Advanced Manufacturing Technology, 78, 1795-1801 (2015).
15. [15] Lambiase F., Paoletti A., Grossi V. and Di Ilio A., “Analysis of loads, temperatures and welds morphology in FSW of polycarbonate”, Journal of Materials Processing Technology, 266, 639-650 (2019).
16. [16] Wang B., Liu J., Yin M., Xiao Y., Wang X. H. and He J. X., “Comparison of corrosion behavior of Al-Mn and Al- Mg alloys in chloride aqueous solution”, Materials and Corrosion, (2016), 67, No. 1. DOI: 10.1002/maco.201408211.
17. [17] Yıldırım M. and Özyürek D., “The effects of Mg amount on the microstructure and mechanical properties of Al–Si–Mg alloys”, Materials and Design, 51, 767–774 (2013).
18. [18] Sarsılmaz F., “Weldability Characteristics of Dissimilar Al/Cu Friction Stir Weld Joints”, Materials Testing, 54(2), 85-91 (2012).
19. [19] Sarsilmaz F., Çaydaş U., Hasçalik A. and Tanriover L., “The joint properties of dissimilar aluminum plates joined by friction stir welding”, International Journal of Materials Research, 101(5), 692-699, (2010).