Effect of different combinations of tailor-welded blank coupled with change in weld location on mechanical properties by laser welding



Using tailor-welded blanks (TWB) in automotive industry is on the rise. This is done due to advantages such as reduction in weight leading to more effective operational cost and lower energy consumption of vehicles. The main objective of this investigation was to study the effect of location change of weld zone and differences in thickness combination of TWB sheets on their tensile characteristics and forming capabilities. Quality evaluations of weld zone metallographic and tensile as well as ball punch tests have been conducted. Tension characteristics of welded samples have been determined by conducting a uni-axial tensile test perpendicular on the weld line in those samples. Forming capability of TWB samples were also studied by using sphere head chisel test. By moving weld line toward thick sheets direction and increasing thin sheets share of the weld in TWB, an increase in relative elongation in tensile test and in chisel test increase in cups height was observed. This indicates that forming capability of TWB samples by moving weld line toward thick sheet increases and weld zone does not have much effect on forming capability of TWB. By using the derived recommended relation induced from this study, it is conceivable to obtain the amount of increase in relative length of TWB from its base sheets. Results of this relation are confirmed with obtained results from tensile test. Also by reduction in thickness difference of TWB sheets, their formability increases.


Tailor welded blanks St14 steel Laser welding Formability Tensile properties 


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  1. 1.
    Tusek J (2001) Welding of tailored blanks of different materials. J Mater Process Technol 119:180–184CrossRefGoogle Scholar
  2. 2.
    Auto/Steel Partnership (1995) Tailor welded blank design and manufacturing manual, Technical ReportGoogle Scholar
  3. 3.
    Dawes C (1992) Laser welding, a practical guide. Abington, CambridgeCrossRefGoogle Scholar
  4. 4.
    Duley WW (1999) Laser welding. Wiley, New YorkGoogle Scholar
  5. 5.
    Panda SKD, Ravi Kumar D, Kumar H, Nath AK (2007) Characterization of tensile properties of tailor welded IF steel sheets and their formability in stretch forming. J Mater Process Technol 183:321–332CrossRefGoogle Scholar
  6. 6.
    Baptista AJ, Rodrigues DM, Menezes LF (2006) Influence of the weld on the mechanical behavior of tailor welded blanks. Mater Sci 514–516:1493–1500Google Scholar
  7. 7.
    Abdullah K, Wild PM, Jeswiet JJ, Ghasempoor A (2001) Tensile testing for weld deformation properties in similar gage tailor welded blanks using the rule textures. J Mater Process Technol 112:91–97CrossRefGoogle Scholar
  8. 8.
    Gaied S, Roelandt J, Pinard F, Schmit F, Balabane M (2009) Experimental and numerical assessment of tailor-welded blanks formability. J Mater Process Technol 210:387–395CrossRefGoogle Scholar
  9. 9.
    Chan SM, Chan LC, Lee TC (2003) Tailor-welded blanks of different thickness ratios effects on forming limit diagrams. J Mater Process Technol 132:95–101CrossRefGoogle Scholar
  10. 10.
    Cheng CH, Chan LC, Chow CL (2007) Weldment properties evaluation and formability study of tailor-welded blanks of different thickness combinations and welding orientations. J Mater Sci 42:5982–5990CrossRefGoogle Scholar
  11. 11.
    Mustafa A, Ahmetoglu D, Brouwers L, Shulkin L, Taupin G, Kinzel L, Altan T (1995) Deep drawing of round cups from tailor-welded blanks. J Mater Process Technol 53:684–694CrossRefGoogle Scholar
  12. 12.
    British Standard EN ISO 13919-2 (2001)Google Scholar
  13. 13.
    British Standard EN ISO 15614-11 (2002)Google Scholar
  14. 14.
    STM Standard E 8M (2001)Google Scholar
  15. 15.
    ASTM Standard E 643 (2001)Google Scholar
  16. 16.
    Shao H, Gould J, Albright CH (2007) Laser blank welding high-strength steels. Metall Mater Trans 38:321–331CrossRefGoogle Scholar
  17. 17.
    Hosfort WH, Caddel RM (1978) Metal forming, mechanical and metallurgy. Cambridge University Press, CambridgeGoogle Scholar
  18. 18.
    Hiam J, Lee A (1978) Factors influencing the forming limit curves of sheet steel. Sheet Metal Ind J 55:631–643Google Scholar

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© Springer-Verlag London 2012

Authors and Affiliations

  1. 1.Center for Advancement in Mechanical and Non Destructive Testing, School of Mechanical EngineeringIran University of Science and TechnologyTehranIran

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