Experimental approach on stress–strain analysis of weldment in Ti-TWBs at elevated temperatures

  • L. C. Chan
  • C. P. Lai
  • C. L. Chow
  • C. H. Cheng


This paper aims at presenting an experimental investigation of the mechanical properties of the weldment in titanium tailor-welded blanks (Ti-TWBs) at different elevated temperatures. High-contrast image patterns were laser-marked on the surface of Ti-TWB weldment. During the transverse tensile test of Ti-TWB, the images of weldment deformations and their corresponding applied loads were captured simultaneously by a dual-image vision system. After the image processing, the true stress–strain data of the weldment were evaluated successfully. Also, the stress–strain behaviors of the weldment for Ti-TWBs at different elevated temperatures were measured by heating up the specimens to specified temperatures (300°C, 500°C, and 600°C) using an induction coil specially connected to the induction furnace. Finally, the results show that, similar to the "as received" titanium sheets, increase in temperature enhances the ductility of the weldment favorably, thus reducing the required load for the related metal working.


Tailor-welded blanks Titanium Weldment Stress–strain behavior 


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  1. 1.
    Smith LS, Gittos MF, Threadgill PL (1999) Welding titanium: a designers and users handbook. Titanium Information Group, World Center for Materials Joining Technology, Cambridge, UKGoogle Scholar
  2. 2.
    Chan LC, Cheng CH, Jie M, Chow CL (2005) Damage-based formability analysis for TWBs. Int J Damage Mech 14:83–96CrossRefGoogle Scholar
  3. 3.
    Dorgan RJ, Voyiadjis GZ (2006) A missed finite element implementation of a gradient-enhanced coupled damage-plasticity model. Int J Damage Mech 15:201–235CrossRefGoogle Scholar
  4. 4.
    Chow CL, Yang XJ (2004) A generalized mixed isotropic-kinematic hardening plastic model coupled with anisotropic damage for sheet metal forming. Int J Damage Mech 12:81–101CrossRefGoogle Scholar
  5. 5.
    Lestriez P, Saanouni K, Mariage JF, Cherouat A (2004) Numerical prediction of ductile damage in metal forming processes including thermal effects. Int J Damage Mech 13:59–80CrossRefGoogle Scholar
  6. 6.
    Caiazzo F, Curcio F, Daurelio G, Minutolo FMC (2004) Ti6Al4V sheets lap and butt joints carried out by CO2 laser: mechanical and morphological characterization. J Mater Process Technol 149:546–552CrossRefGoogle Scholar
  7. 7.
    Wang SH, Wei MD, Tsay LW (2003) Tensile properties of LBW welds in Ti-6Al-4V alloy at elevated temperatures below 450°C. Mater Lett 57:1815–1823CrossRefGoogle Scholar
  8. 8.
    Cheng CH, Chan LC, Lai CP, Chow CL (2006) Formability of Ti-TWBs at elevated temperatures. SAE technical paper no. 2006-01-0353, SAE InternationalGoogle Scholar

Copyright information

© Springer-Verlag London Limited 2008

Authors and Affiliations

  • L. C. Chan
    • 1
  • C. P. Lai
    • 1
  • C. L. Chow
    • 2
  • C. H. Cheng
    • 1
  1. 1.Department of Industrial and Systems EngineeringThe Hong Kong Polytechnic UniversityKowloonChina
  2. 2.Department of Mechanical EngineeringUniversity of Michigan–DearbornDearbornUSA

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