Experimental investigation on the deformation behaviors of Ti-6Al-4V sheet in electropulsing-assisted incremental forming

  • Dongwei Ao
  • Xingrong Chu
  • Jun GaoEmail author
  • Yang Yang
  • Shuxia Lin


A self-built experiment platform was employed to carry out electropulsing-assisted incremental forming of Ti-6Al-4V alloy sheet. The influences of electropulsing on the deformation behaviors, deformation force, friction coefficient, strain distribution, and microstructures of Ti-6Al-4V alloy were investigated. The temperature field distribution of the deformed sheet under electropulsing was analyzed through finite element simulation. In this work, the experiments were conducted with the frequencies of 0–450 Hz and peak current densities of 0–881 A/mm2. The strain distributions of the formed groove parts were obtained and the influences of electropulsing parameters on the fracture forming strains were studied. It was found that the major strain and thickness strain enhanced, and fracture forming lines moved up with the increasing electropulsing parameters, indicating the formability enhancement. Moreover, the maximum fracture depth of groove rose to 7.0 mm, which increased by 52.2% compared with conventional ambient incremental forming. The results presented that the frequency and peak current density of electropulsing could decrease the deformation force. The vertical and horizontal forces were measured to analyze the friction condition. It was suggested that the friction reduction between tool and alloy sheet contributed to the formability enhancement. In addition, the analysis of microstructure evolution showed that the β grain became elongated due to dynamic recovery and some coarse uneven α grain tended to homogenize, contributing to the formability enhancement of Ti-6Al-4V sheet.


Electropulsing Incremental forming Ti-6Al-4V alloy Deformation behavior Microstructure 


Funding information

The authors would like to acknowledge the financial support from the Natural Science Foundation of Shandong Province (ZR2019MEE008), the National Natural Science Foundation of China (Grant No.51405266), and Young Scholars Program of Shandong University, Weihai (YSPSDUWH).


  1. 1.
    Ao D, Chu X, Yang Y, Lin SX, Gao J (2018) Effect of electropulsing on springback during V-bending of Ti-6Al-4V titanium alloy sheet. Int J Adv Manuf Technol 96:3197–3207. CrossRefGoogle Scholar
  2. 2.
    Zhu Z, Sui S, Sun J, Li J, Li Y (2017) Investigation on performance characteristics in drilling of Ti6Al4V alloy. Int J Adv Manuf Technol 93:651–660. CrossRefGoogle Scholar
  3. 3.
    Grün PA, Uheida EH, Lachmann L, Dimitrov D, Oosthuizen GA (2018) Formability of titanium alloy sheets by friction stir incremental forming. Int J Adv Manuf Technol. 99:1993–2003. CrossRefGoogle Scholar
  4. 4.
    Sorgente D, Palumbo G, Piccininni A, Guglielmi P, Tricarico L (2017) Modelling the superplastic behaviour of the Ti6Al4V-ELI by means of a numerical/experimental approach. Int J Adv Manuf Technol 90:1–10. CrossRefGoogle Scholar
  5. 5.
    Liu J, Tan MJ, Aue-u-lan Y, Guo M, Castagne S, Chua BW (2013) Superplastic-like forming of Ti-6Al-4V alloy. Int J Adv Manuf Technol 69:1097–1104. CrossRefGoogle Scholar
  6. 6.
    Zhang QL, Guo H, Xiao F, Gao L, Bondarev AB, Han W (2009) Influence of anisotropy of the magnesium alloy AZ31 sheets on warm negative incremental forming. J Mater Process Technol 209:5514–5520. CrossRefGoogle Scholar
  7. 7.
    Zhang QL, Xiao F, Guo H, Li C, Gao L, Guo X, Han W, Bondarev AB (2010) Warm negative incremental forming of magnesium alloy AZ31 Sheet: new lubricating method. J Mater Process Technol 210:323–329. CrossRefGoogle Scholar
  8. 8.
    Li Y, Chen X, Liu Z, Sun J, Li F, Li J, Zhao G (2017) A review on the recent development of incremental sheet-forming process. Int J Adv Manuf Technol 92:2439–2462. CrossRefGoogle Scholar
  9. 9.
    Palumbo G, Brandizzi M (2012) Experimental investigations on the single point incremental forming of a titanium alloy component combining static heating with high tool rotation speed. Mater Des 40:43–51. CrossRefGoogle Scholar
  10. 10.
    Duflou JR, Callebaut B, Verbert J, De Baerdemaeker H (2007) Laser assisted incremental forming: formability and accuracy improvement. CIRP Ann-Manuf Techn 56:273–276. CrossRefGoogle Scholar
  11. 11.
    Fan G, Gao L, Hussain G, Wu Z (2008) Electric hot incremental forming: a novel technique. Int. J Mach Tool Manu 48:1688–1692. CrossRefGoogle Scholar
  12. 12.
    Fan G, Sun F, Meng X, Gao L, Tong G (2009) Electric hot incremental forming of Ti-6Al-4V titanium sheet. Int J Adv Manuf Technol 49:941–947. CrossRefGoogle Scholar
  13. 13.
    Wu HB, To S (2016) Effects of electropulsing treatment on material properties and ultra-precision machining of titanium alloy. Int J Adv Manuf Technol 82:2029–2036. CrossRefGoogle Scholar
  14. 14.
    Sun Z, Wang H, Ye Y, Xu Z, Tang G (2018) Effects of electropulsing on the machinability and microstructure of GH4169 superalloy during turning process. The International Journal of Advanced Manufacturing Technology 95:2835–2842. CrossRefGoogle Scholar
  15. 15.
    Kuang J, Li X, Zhang R, Ye Y, Luo A, Tang G (2016) Enhanced rollability of Mg3Al1Zn alloy by pulsed electric current: a comparative study. Mater Des 100:204–216. CrossRefGoogle Scholar
  16. 16.
    Bao WK, Chu XR, Lin SX, Gao J (2015) Experimental investigation on formability and microstructure of AZ31B alloy in electropulse-assisted incremental forming. Mater Des 87:632–639. CrossRefGoogle Scholar
  17. 17.
    Fan G, Gao L (2014) Numerical simulation and experimental investigation to improve the dimensional accuracy in electric hot incremental forming of Ti–6Al–4V titanium sheet. The Int J Adv Manuf Technol 72:1133–1141. CrossRefGoogle Scholar
  18. 18.
    Zhu RF, Tang GY, Shi SQ, Fu MW (2013) Microstructure evolution of copper strips with gradient temperature in electropulsing treatment. J Alloy Compd 581:160–165. CrossRefGoogle Scholar
  19. 19.
    Li YL, Liu ZB, Daniel WJT, Meehan PA (2014) Simulation and experimental observations of effect of different contact interfaces on the incremental sheet forming process. Matet Manuf Process. 29:121–128. CrossRefGoogle Scholar
  20. 20.
    Amini S, Hosseinpour Gollo A, Paktinat H (2016) An investigation of conventional and ultrasonic-assisted incremental forming of annealed AA1050 sheet. Int J Adv Manuf Technol 90:1569–1578. CrossRefGoogle Scholar
  21. 21.
    Durante M, Formisano A, Langella A, Capece Minutolo FM (2009) The influence of tool rotation on an incremental forming process. J Mater Process Technol 209:4621–4626. CrossRefGoogle Scholar
  22. 22.
    Lu B, Fang Y, Xu DK, Chen J, Ou H, Moser NH, Cao J (2014) Mechanism investigation of friction-related effects in single point incremental forming using a developed oblique roller-ball tool. Int. J Mach Tool Manu 85:14–29. CrossRefGoogle Scholar
  23. 23.
    Silva MB, Skjoedt M, Bay N, Martins PAF (2009) Revisiting single-point incremental forming and formability/failure diagrams by means of finite elements and experimentation. J Strain Anal Eng 44:221–234. CrossRefGoogle Scholar
  24. 24.
    Kim YH, Park JJ (2002) Effect of process parameters on formability in incremental forming of sheet metal. J Mater Process Technol 130-131:42–46CrossRefGoogle Scholar
  25. 25.
    Cui WF, Jin Z, Guo AH, Zhou L (2009) High temperature deformation behavior of α+β-type biomedical titanium alloy Ti–6Al–7Nb. Mater Sci Eng A 499:252–256. CrossRefGoogle Scholar
  26. 26.
    Zhao ZY, Wang GF, Hou HL, Han BS, Zhang YL, Zhang N (2017) Influence of high-energy pulse current on the mechanical properties and microstructures of Ti-6Al-4V alloy[J]. J Mater Eng Perform 26:5146–5153. CrossRefGoogle Scholar

Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  • Dongwei Ao
    • 1
  • Xingrong Chu
    • 1
  • Jun Gao
    • 1
    Email author
  • Yang Yang
    • 2
  • Shuxia Lin
    • 1
  1. 1.Associated Engineering Research Center of Mechanics and Mechatronic EquipmentShandong UniversityWeihaiChina
  2. 2.Key Laboratory of Optoelectronic Materials Chemistry and PhysicsFujian Institute of Research on the Structure of Matter, Chinese Academy of SciencesFuzhouChina

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