Analysis for the forces in FSW for aluminum alloy considering tool geometry and process velocities

Technical Paper
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Abstract

In the friction stir welding (FSW) technique, the friction stir tool is submitted to a system of forces that influences the main phenomena of the process. However, experimental studies for all the forces in FSW have received little attention. For a better process understanding, an analysis of the individual contribution of each part of the tool on the forces is required. In this paper, the influence of the pin and shoulder on the axial force is separately considered as a function of the rotational, plunging and welding speeds. Three experimental designs were carried out for the tool pin, the tool shoulder and the complete tool. Additionally, the welding and transverse forces are measured during FSW experiments for different combinations of the main process parameters. The results showed an important contribution of the pin to avoid excessive loads during the plunging phase and an interaction between the effects of the tool geometry, and rotational and plunging speeds factors on the maximum axial force.

Keywords

Friction stir welding Forces behavior FSW experiments Tool pin Tool shoulder 

References

  1. 1.
    Thomas WM, Nicholas ED, Needham JC, Murch MG, Templesmith P, Dawes CJ (1991) GB patent application no. 9125978.8 (December 1991)Google Scholar
  2. 2.
    Mishra RS, Ma ZY (2005) Friction Stir Welding and Processing. Mater Sci Eng R 50(1–2):1–78CrossRefGoogle Scholar
  3. 3.
    Rajakumar S, Muralidharan C, Balasubramanian V (2011) Statistical analysis to predict grain size and hardness of the weld nugget of friction stir welded AA6061-T6 aluminium alloy joints. Int J Adv Manuf Technol 57(1):151–165CrossRefGoogle Scholar
  4. 4.
    Qian J, Li J, Sun F, Xiong J, Zhang F, Lina X (2013) An analytical model to optimize rotation speed and travel speed of friction stir welding for defect-free joints. Scr Mater 68(3–4):175–178CrossRefGoogle Scholar
  5. 5.
    Quintana KJ, Silveira JL (2017) Analysis of torque in friction stir welding of aluminum alloy 5052 by inverse problem method. ASME J Manuf Sci Eng 139(4):041017.  https://doi.org/10.1115/1.4035719 CrossRefGoogle Scholar
  6. 6.
    Nandan R, DebRoy T, Bhadeshia HKDH (2008) Recent advances in friction-stir welding—process, weldment structure and properties. Prog Mater Sci 53(6):980–1023CrossRefGoogle Scholar
  7. 7.
    Trimble D, Monaghan J, O’donnell GE (2012) Force generation during friction stir welding of AA2024-T3. CIRP Ann Manuf Technol 61(1):9–12.  https://doi.org/10.1016/j.cirp.2012.03.024 CrossRefGoogle Scholar
  8. 8.
    Bist A, Saini JS, Sharma B (2016) A review of tool wear prediction during friction stir welding of aluminium matrix composite. Trans Nonferrous Met Soc China 26:2003–2018.  https://doi.org/10.1016/S1003-6326(16)64318-2 CrossRefGoogle Scholar
  9. 9.
    Prater T (2011) Solid-state joining of metal matrix composites: a survey of challenges and potential solutions. Mater Manuf Proc 26(4):636–648.  https://doi.org/10.1080/10426914.2010.492055 CrossRefGoogle Scholar
  10. 10.
    Burek R, Wydrzyński D, Sęp J, Więckowski W (2018) The effect of tool wear on the quality of lap joints between 7075 t6 aluminum alloy sheet metal created with the FSW method. Eksploatacja i Niezawodnosc-Maint Reliab 20(1):100–106.  https://doi.org/10.17531/ein.2018.1.13 CrossRefGoogle Scholar
  11. 11.
    Shindo DJ, Rivera AR, Murr LE (2002) Shape optimization for tool wear in the friction-stir welding of cast Al359-20% SiC MMC. J Mater Sci 37:4999–5005.  https://doi.org/10.1023/A:1021023329430 CrossRefGoogle Scholar
  12. 12.
    Yan J, Sutton M, Reynolds A (2005) Process–structure–property relationships for nugget and heat affected zone regions of AA2524–T351 friction stir welds. Sci Technol Weld Joining 10(6):725–736CrossRefGoogle Scholar
  13. 13.
    Kumar R, Singh K, Pandey S (2012) Process forces and heat input as function of process parameters in AA5083 friction stir welds. Trans Nonferrous Met Soc China 22(2):288–298.  https://doi.org/10.1016/S1003-6326(11)61173-4 CrossRefGoogle Scholar
  14. 14.
    Su H, Wu C, Pittner A et al (2013) Simultaneous measurement of tool torque, transverse force and plunging force in friction stir welding. J Manuf Proc 15(4):495–500CrossRefGoogle Scholar
  15. 15.
    Hussein SA, Tahir ASM, Izamshah R (2015) Generated forces and heat during the critical stages of friction stir welding and processing. J Mech Sci Technol. 29(10):4319–4328.  https://doi.org/10.1007/s12206-015-0930-3 CrossRefGoogle Scholar
  16. 16.
    Papahn H, Bahemmat P, Haghpanahi M et al (2014) Effect of friction stir welding tool on temperature, applied forces and weld quality. IET Sci Meas Technol.  https://doi.org/10.1049/iet-smt.2014.0150 Google Scholar
  17. 17.
    Jain R, Pal SK, Singh SB (2018) Finite element simulation of pin shape influence on material flow, forces in friction stir welding. Int J Adv Manuf Technol 94:1781–1797.  https://doi.org/10.1007/s00170-017-0215-3 CrossRefGoogle Scholar
  18. 18.
    Upadhyay P, Reynolds AP (2010) Effects of thermal boundary conditions in friction stir welded AA7050-T7 sheets. Mater Sci Eng A 527(6):1537–1543CrossRefGoogle Scholar
  19. 19.
    Rose AR, Manisekar K, Balasubramanian V (2011) Effect of plunging force on microstructure and tensile properties of friction stir welded AZ61A magnesium alloy. Transact Nonferrous Metals Soc China 21(5):974–984.  https://doi.org/10.1016/S1003-6326(11)60809-1 CrossRefGoogle Scholar
  20. 20.
    Schmidt H, Hattel J, Wert J (2004) An analytical model for the heat generation in friction stir welding. Modell Simul Mater Sci Eng 12(1):143–157CrossRefGoogle Scholar
  21. 21.
    Soundararajan V, Zekovic S, Kovacevic R (2005) Thermomechanical model with adaptive boundary conditions for friction stir welding of Al 6061. Int J Mach Tools Manuf 45(14):1577–1587.  https://doi.org/10.1016/j.ijmachtools.2005.02.008 CrossRefGoogle Scholar
  22. 22.
    Kim Y, Fujii H, Tsumura T et al (2006) Three defect types in friction stir welding of aluminum die casting alloy. Mater Sci Eng A Struct Mater Properties Microstruct Process 415(1–2):250–254.  https://doi.org/10.1016/j.msea.2005.09.072 CrossRefGoogle Scholar
  23. 23.
    Balasubramanian N, Gattu B, Mishra RS (2009) Process forces during friction stir welding of aluminium alloys. Sci Technol Weld Joining 14(2):141–145.  https://doi.org/10.1179/136217108X372540 CrossRefGoogle Scholar
  24. 24.
    Davis TA, Shin YC, Yao B (2011) Observer-based adaptive robust control of friction stirwelding plunging force. IEEE-ASME Transact Mechatronics 16(6):1032–1039.  https://doi.org/10.1109/TMECH.2010.2071417 CrossRefGoogle Scholar

Copyright information

© The Brazilian Society of Mechanical Sciences and Engineering 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringCOPPE, Universidade Federal do Rio de JaneiroRio de JaneiroBrazil
  2. 2.Department of Mechanical EngineeringCOPPE and Polytechnic SchoolRio de JaneiroBrazil

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