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Obtaining high formability of IF-galvanized steel tailor welded blanks by applying optimum CO2 laser welding parameters

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Published/Copyright: May 14, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 102 Issue 10

Abstract

Tailor welded blanks are complex component designs tailor-made through welding of multiple metal sheets with different thicknesses, shapes and/or strengths prior to forming. Making tailor welded blanks out of interstitial free galvanized steels not only provides the general advantages of tailor blanks including the weight and manufacturing cost reductions per part, but also considering the properties of the parent sheet, could guarantee exceptional corrosion resistance as well as favorable formability characteristics. The quality of the weld joint in these blanks and their formability is directly influenced by the parameters of the welding process. In this research, the use of CO2 laser for welding thin interstitial free galvanized steel sheets with different thicknesses (0.8 and 1.2 mm) was optimized using the Taguchi analytical methodology. The welding parameters including the shielding gas pressure, laser power and travel speed of the laser beam were evaluated by measuring the dome height value after forming and the optimal welding parameters values were obtained. The optimal result was equated with the highest dome height value and consequently highest formability. Results showed that the welding parameters have a great effect on achievable properties of tailor welded blanks and entrapment of zinc vapor due to evaporation of zinc has a significant role in determining the weld quality of the studied blanks. Microstructure, hardness and mechanical properties of different welds were also investigated. Formation of voids and porosity as well as lack of diffusion were some of the results of welding with non-optimized parameters. An equation based on a regression model is presented to predict the minimum dome height value of tailor welded blank consisted of interstitial free galvanized steels with a thickness ratio of 1.5.

Keywords: TWB; CO2 laser welding; Formability; IF-galvanized steel; Taguchi method
* Correspondence address Mr. Mahmoud Abbasi, 424 Hafez Ave., Tehran, Iran, P.O. Box: 15875-4413, Tel.: +98 (21) 64 542 949, Fax: +98 (21) 66 405 846, E-mail:

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Received: 2010-9-1
Accepted: 2011-8-16
Published Online: 2013-05-14
Published in Print: 2011-10-01

© 2011, Carl Hanser Verlag, München

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  1. Contents
  2. Contents
  3. Editorial
  4. Laudatio für Frau Prof. Dr.-Ing. Christina Berger
  5. Review
  6. Role of microalloying elements in the microstructure of hot rolled steels
  7. Original Contributions
  8. Experimental study of phase equilibria in the “SnO2” – CaO – SiO2 system in air
  9. Thermodynamic modeling of the Cr – S system
  10. Observation of early melting stages of an Al – Cu alloy in a temperature gradient
  11. Knudsen effusion mass spectrometric studies of the B2 phase in the Al – Co system
  12. Microstructure evolution in hypereutectoid graphitic steel
  13. The effect of thermal treatment on the structural properties of copper-containing sol-gel silica nanocomposites
  14. Electrospray deposition of thin copper-indium-diselenide films
  15. Morphology, fibrous composition and tensile properties of drag-silk produced by two species of orb spider
  16. Magnetic properties of Co0.5Zn0.5Fe2O4 nanopowders prepared by means of the template-assisted hydrothermal method
  17. Effects of aging and sheet thickness on the room temperature deformation behavior and in-plane anisotropy of cold rolled and solution treated Nimonic C-263 alloy sheet
  18. Thermal expansion/contraction behavior of AA7050 alloy in the as-cast condition relevant to thermomechanical simulation of residual thermal stresses
  19. Obtaining high formability of IF-galvanized steel tailor welded blanks by applying optimum CO2 laser welding parameters
  20. Investigation of the dependence of structural and mechanical properties of cement-bonded bauxite refractories on their process conditions
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https://doi.org/10.3139/146.110580
Keywords for this article
TWB; CO2 laser welding; Formability; IF-galvanized steel; Taguchi method

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Laudatio für Frau Prof. Dr.-Ing. Christina Berger
  5. Review
  6. Role of microalloying elements in the microstructure of hot rolled steels
  7. Original Contributions
  8. Experimental study of phase equilibria in the “SnO2” – CaO – SiO2 system in air
  9. Thermodynamic modeling of the Cr – S system
  10. Observation of early melting stages of an Al – Cu alloy in a temperature gradient
  11. Knudsen effusion mass spectrometric studies of the B2 phase in the Al – Co system
  12. Microstructure evolution in hypereutectoid graphitic steel
  13. The effect of thermal treatment on the structural properties of copper-containing sol-gel silica nanocomposites
  14. Electrospray deposition of thin copper-indium-diselenide films
  15. Morphology, fibrous composition and tensile properties of drag-silk produced by two species of orb spider
  16. Magnetic properties of Co0.5Zn0.5Fe2O4 nanopowders prepared by means of the template-assisted hydrothermal method
  17. Effects of aging and sheet thickness on the room temperature deformation behavior and in-plane anisotropy of cold rolled and solution treated Nimonic C-263 alloy sheet
  18. Thermal expansion/contraction behavior of AA7050 alloy in the as-cast condition relevant to thermomechanical simulation of residual thermal stresses
  19. Obtaining high formability of IF-galvanized steel tailor welded blanks by applying optimum CO2 laser welding parameters
  20. Investigation of the dependence of structural and mechanical properties of cement-bonded bauxite refractories on their process conditions
  21. The effects of curing medium on the flexural strength and water permeability of cementitious composites containing Fe2O3 nanofillers
  22. DGM News
  23. DGM News
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