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On experimental optimization of friction stir welding of aluminum 6061: understanding processing-microstructure-property relations

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Abstract

A comprehensive investigation into processing-microstructure-property relations for optimization of ultimate tensile strength (UTS) of friction stir welded aluminum 6061 plates is presented. A customized experimental setup has been employed to measure temperature at multiple points of welded plates as well as the friction stir welding (FSW) tool axial force, transverse force, torque, and temperature under various combinations of process parameters. After performing a set of FSW tests based on a full factorial design, X-ray and ultrasonic tests were employed to detect process-induced failure in test samples. Using design of experiments, the main effects and percentage contributions of the process parameters on the maximum UTS were then identified. During the latter analysis, a new methodology is proposed to cope with the effect of “variable” axial force, as it is often uncontrollable during FSW tests. Samples with the highest and lowest UTS were selected and examined in more detail by comparing their fracture surfaces using scanning electron microscopy (SEM), as well as their grain size distributions using electron back scattered diffraction (EBSD) and microhardness experiments. Finally, through the observed microstructure, temperature distribution, and welding force, it could be explained why the UTS and microhardness are found to notably vary between sample sof different RPM and weld speeds.

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References

  1. 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 Join 10:725–736

    Article  Google Scholar 

  2. Mahoney M, Harrigan W, Wert J (1998) Friction stir welding sic discontinuously reinforced aluminum, INALCO, Seventh Int. Conf. Joints in Aluminum (Cambridge, U.K.)

  3. Commin L, Dumont M, Masse J-E, Barrallier L (2009) Friction stir welding of AZ31 magnesium alloy rolled sheets: influence of processing parameters. Acta Mater 57:326–334

    Article  Google Scholar 

  4. Lee W-B, Jung S-B (2004) The joint properties of copper by friction stir welding. Mater Lett 58:1041–1046

    Article  Google Scholar 

  5. Konkol PJ, Mathers JA, Johnson R, Pickens JR (2003) Friction stir welding of HSLA-65 steel for shipbuilding. J Ship Prod 19:159–164

    Google Scholar 

  6. Posada M, DeLoach J, Reynolds AP, Skinner M, Halpin J (2001) Friction stir weld evaluation of steel and stainless steel weldments. Proceedings of the Symposium on Friction Stir Welding and Processing, TMS 2001, 159–171

  7. Nandan R, Lienert TJ, DebRoy T (2008) Toward reliable calculations of heat and plastic flow during friction stir welding of Ti-6Al-4V alloy. Int J Mater Res 99:434–444

    Article  Google Scholar 

  8. Aval HJ, Serajzadeh S, Kokabi AH (2011) Thermo-mechanical and microstructural issues in dissimilar friction stir welding of AA5086–AA6061. J Mater Sci 46:3258–3268

    Article  Google Scholar 

  9. Taban E, Gould JE, Lippold JC (2010) Dissimilar friction welding of 6061-T6 aluminum and AISI 1018 steel: properties and microstructural characterization. Mater Design 31:2305–2311

    Article  Google Scholar 

  10. da Silva AAM, Aldanondo E, Alvarez P, Echeverría A (2010) Dissimilar joining of AA1050 aluminium alloy and hot-stamped boron steels using friction stir, friction stir spot welding and friction stir shoulder welding. 8th international FSW symposium TWITimmendorfer Strand, Germany

  11. McLean AA, Powell GLF, Brown IH, Linton VM (2003) Friction stir welding of magnesium alloy AZ31B to aluminium alloy 5083. Sci TechWeld Join 8:462–464

    Article  Google Scholar 

  12. Somasekharan AC, Murr LE (2004) Microstructures in friction-stir welded dissimilar magnesium alloys and magnesium alloys to 6061-T6 aluminum alloy. Mater Charac 52:49–64

    Article  Google Scholar 

  13. Uzun H, Dalle Donne C, Argagnotto A, Ghidini T, Gambaro C (2005) Friction stir welding of dissimilar Al 6013-T4 To X5CrNi18-10 stainless steel. Mater Design 26:41–46

    Article  Google Scholar 

  14. Ouyang J, Yarrapareddy E, Kovacevic R (2006) Microstructural evolution in the friction stir welded 6061 aluminum alloy (T6-temper condition) to copper. J Mater Proc Tech 172:110–122

    Article  Google Scholar 

  15. Dressler U, Biallas G, Mercado UA (2009) Friction stir welding of titanium alloy TiAl6V4 to aluminium alloy AA2024-T3. Mater Sci Eng A 526:113–117

    Article  Google Scholar 

  16. Chung YD, Fujii H, Tanigawa H (2010) Dissimilar friction stir welding of F82H steel and austenite stainless steels without transformation. 8th international FSW symposium TWI Timmendorfer Strand, Germany

  17. Mishra RS, Mahoney MW (eds) Friction stir welding and processing. ASM International®. Materials Park, Ohio

  18. Woo W, Choo H (2006) Texture analysis of a friction stir processed 6061-T6 aluminum alloy using neutron diffraction. Acta Mater 54:3871–3882

    Article  Google Scholar 

  19. Frankel G, Xia Z (1999) Localized corrosion and stress corrosion cracking resistance of friction stir welded aluminum alloy 5454. Corrosion 55:139–150

    Article  Google Scholar 

  20. Nourani M, Milani AS, Yannacopoulos S (2011) Taguchi optimization of process parameters in friction stir welding of 6061 aluminum alloy: a review and case study. Eng 3:144–155

    Article  Google Scholar 

  21. Nourani M, Milani AS, Yannacopoulos S, Yan C (2012) Predicting grain size distribution in friction stir welded 6061 aluminum alloy. Proceedings of 9th International Friction Stir Welding Symposium, TWI, Huntsville

  22. Nourani M, Milani AS, Yannacopoulos S, Yan C (2014) An integrated multiphysics model for friction stir welding of 6061 aluminum alloy. Int J Multiphys 8(1):29–48

    Article  Google Scholar 

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Authors and Affiliations

  1. School of Engineering, University of British Columbia, Kelowna, Canada

    M. Nourani, A. S. Milani & S. Yannacopoulos

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  1. M. Nourani
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  2. A. S. Milani
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  3. S. Yannacopoulos
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Correspondence to A. S. Milani.

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Nourani, M., Milani, A.S. & Yannacopoulos, S. On experimental optimization of friction stir welding of aluminum 6061: understanding processing-microstructure-property relations. Int J Adv Manuf Technol 79, 1425–1441 (2015). https://doi.org/10.1007/s00170-015-6932-6

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  • DOI: https://doi.org/10.1007/s00170-015-6932-6

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