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Metal Flow during Friction Stir Welding of 7075-T651 Aluminum Alloy

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Abstract

Bronze foil of 0.1 mm thickness was placed between faying surfaces of two plates to be butt-welded as marker material to reveal the flow behavior of weld metal during friction stir welding of 7075-T651 aluminum alloy. By tracing the bronze foil fragments in the weld after welding, the metal flow behavior during the welding process was revealed. Besides, the tool forces in the welding process were measured by the octagonal loop resistance turning dynamometer to expound the periodic variation of metal flow pattern. Results show that the flow behavior of the weld metal is different along the thickness direction. The flow pattern presents a periodic variation, and a formula has been proposed to calculate the periodicity of the metal flow. In addition, the weld nugget zone presents a “spoon” shape and the fine grains at the spoon handle and those at the spoon bowl are originated from different zones. A plastic metal flow model in FSW was proposed based on the results. Furthermore, the formation of defects was explained by researching the weld metal flow behavior.

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References

  1. Thomas WM, Nicholas ED, Needham JC, Church MG, Templesmith P, Dawes CJ, Patent GB (1991) Friction stir welding. International patent application no. PCT/GB92102203 and Great Britain patent application no. 9125978.8

  2. Mishra RS, Ma ZY (2005) Friction stir welding and processing. Mater Sci Eng R 50(1–2):1–78

    Article  MATH  Google Scholar 

  3. Nandan R, DebRoy T, Bhadeshia HKDH (2008) Recent advances in friction-stir welding-Process, weldment structure and properties. Prog Mater Sci 53(6):980–1023

    Article  Google Scholar 

  4. Dawes CJ, Thomas WM (1996) Friction stir process welds aluminum alloys. Weld J 75(3):41–45

    Google Scholar 

  5. Rhodes CG, Mahoney MW, Bingel WH (1997) Effects of friction stir welding on microstructure of 7075 aluminum. Scripta Mater 36(1):69–75

    Article  Google Scholar 

  6. Xu WF, Liu JH, Chen DL (2011) Material flow and core/multi-shell structures in a friction stir welded aluminum alloy with embedded copper markers. J Alloy Comp 509(33):8449–8454

    Article  Google Scholar 

  7. Leal RM, Leitao C, Loureiro A (2008) Material flow in heterogeneous friction stir welding of thin aluminium sheets: effect of shoulder geometry. Mater Sci Eng 498(1–2):384–391

    Article  Google Scholar 

  8. Buffa G, Hua J, Shivpuri R (2006) Design of the friction stir welding tool using the continuum based FEM model. Mater Sci Eng A-Struct 419(1–2):381–388

    Article  Google Scholar 

  9. Coelho RS, Kostka A, Sheikhi S (2008) Microstructure and mechanical properties of an AA6181-T4 aluminium alloy to HC340LA high strength steel friction stir overlap weld. Adv Eng Mater 10(10):961–972

    Article  Google Scholar 

  10. Cui GR, Ma ZY, Li SX (2008) Periodical plastic flow pattern in friction stir processed Al-Mg alloy. Scripta Mater 58(12):1082–1085

    Article  Google Scholar 

  11. Cui L, Yang XQ, Zhou G (2012) Characteristics of defects and tensile behaviors on friction stir welded AA6061-T4 T-joints. Mater Sci Eng, A 543:58–68

    Article  Google Scholar 

  12. Kim YG, Fujii H, Tsumura T (2003) Three defect types in friction stir welding of aluminum die casting alloy. Mater Sci Eng, A 415(1–2):250–254

    Google Scholar 

  13. Zhang Y, Sato YS, Kokawa H (2008) Microstructural characteristics and mechanical properties of Ti-6Al-4V friction stir welds. Mater Sci Eng, A 485(1–2):448–455

    Article  Google Scholar 

  14. Lee WB, Yeon YM, Jung SB (2003) The improvement of mechanical properties of friction-stir-welded A356 Al alloy. Mater Sci Eng, A 355(1–2):154–159

    Article  Google Scholar 

  15. Liu HJ, Fujii H, Maeda M (2003) Tensile properties and fracture locations of friction-stir-welded joints of 2017-T351 aluminum alloy. J Mater Process Tech 142(3):692–696

    Article  Google Scholar 

  16. Lombard H, Hattingh DG, Steuwer A (2008) Optimising FSW process parameters to minimise defects and maximise fatigue life in 5083-H321 aluminium alloy. Eng Fract Mech 75(3–4):341–354

    Article  Google Scholar 

  17. Chen HB, Yan K, Lin T (2006) The investigation of typical welding defects for 5456 aluminum alloy friction stir welds. Mater Sci Eng, A 433(1–2):64–69

    Article  Google Scholar 

  18. Zhang H, Lin SB, Wu L (2006) Defects formation procedure and mathematic model for defect free friction stir welding of magnesium alloy. Mater Design 27(9):805–809

    Article  Google Scholar 

  19. Donath T, Beckmann F, Zettlert R (2004) Investigation of material flow in friction stir welding using computed microtomography. 8th International conference on synchrotron radiation instrumentation. San Francisco 705:1312–1315

    Google Scholar 

  20. Seidel TU, Reynolds AP (2001) Visualization of the material flow in AA2195 friction-stir welds using a marker insert technique. Metall Mater Trans A 32(11):2879–2884

    Article  Google Scholar 

  21. Schmidt HNB, Dickerson TL, Hattela JH (2006) Material flow in butt friction stir welds in AA2024-T3. Acta Mater 54(4):1199–1209

    Article  Google Scholar 

  22. Hamilton C, Dymek S, Blicharski M (2008) A model of material flow during friction stir welding. Mater Charact 59(9):1206–1214

    Article  Google Scholar 

  23. Silva AA, Arruti E, Janeiro G (2011) Material flow and mechanical behaviour of dissimilar AA2024-T3 and AA7075-T6 aluminum alloys friction stir welds. Mater Design 32(4):2021–2027

    Article  Google Scholar 

  24. Li Y, Murr LE, McClure JC (1999) Flow visualization and residual microstructures associated with the friction-stir welding of 2024 aluminum to 6061 aluminum. Mater Sci Eng, A 271(1–2):213–223

    Article  Google Scholar 

  25. Guerra A, Schmidt C, McClure JC (2002) Flow patterns during friction stir welding. Mater Charact 49(2):95–101

    Article  Google Scholar 

  26. Reynolds AP (2008) Flow visualization and simulation in FSW. Scripta Mater 58(5):338–342

    Article  Google Scholar 

  27. Arora A, Zhang Z, De A (2009) Strains and strain rates during friction stir welding. Scripta Mater 61(6):863–866

    Article  Google Scholar 

  28. Nandan R, Roy GG, Lienert TJ (2006) Numerical modelling of 3D plastic flow and heat transfer during friction stir welding of stainless steel. Sci Technol Weld Joi 11(5):526–537

    Article  Google Scholar 

  29. Qian JW, Li JL, Xiong JT (2012) Periodic variation of torque and its relations to interfacial sticking and slipping during friction stir welding. Sci Tech Weldi Joi 17(4):338–341

    Article  Google Scholar 

  30. Fonda R, Reynolds A, Feng CR (2013) Material flow in friction stir welds. Metall Mater Trans A 44A(1):337–344

    Article  Google Scholar 

  31. Fonda R, Bingert JF (2007) Texture variations in an aluminum friction stir weld. Scripta Mater 57(11):1052–1055

    Article  Google Scholar 

  32. Yan JH, Sutton MA, Reynolds AP (2007) Processing and banding in AA2524 and AA2024 friction stir welding. Sci Tech Weldi Joi 12(5):390–401

    Article  Google Scholar 

  33. Fonda RW, Knipling KE, Bingert JF (2009) Texture development in aluminum friction stir welds. Mater Process Texture 200:17–28

    Google Scholar 

Download references

Acknowledgments

The authors would like to thank for financial support the National Natural Science Foundation of China (51005180), the Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China (131052), the Fundamental Research Fund of NPU (JC201233) and the 111 Project (B08040).

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Authors and Affiliations

  1. State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi’an, 710072, Shaanxi, People’s Republic of China

    W. -Y. Li, J. -F. Li, Z. -H. Zhang & D. -L. Gao

  2. Department of Mechanical Engineering, University of South Carolina, Columbia, SC, 29208, USA

    Y. -J. Chao

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  1. W. -Y. Li
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  2. J. -F. Li
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  3. Z. -H. Zhang
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Correspondence to W. -Y. Li.

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Li, W.Y., Li, J.F., Zhang, Z.H. et al. Metal Flow during Friction Stir Welding of 7075-T651 Aluminum Alloy. Exp Mech 53, 1573–1582 (2013). https://doi.org/10.1007/s11340-013-9760-3

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  • DOI: https://doi.org/10.1007/s11340-013-9760-3

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