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Laser welding of 3 mm thick laser-cut AISI 304 stainless steel sheet

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Abstract

The objective of the present work was to study the laser weldability of laser-cut 3 mm thick AISI 304 austenitic stainless steel sheet (using oxygen as an assist gas). For minimizing heat input during laser cutting, which is an important factor influencing the thickness of the oxide layer on the cut surface, laser cutting was performed in pulsed mode. The results of the study demonstrated that although the laser welding of laser-cut specimens did not result in the formation of weld defects, the resultant laser weldments exhibited reduced ductility with respect to base metal and bead-on-plate laser weldments. Laser-cut and laser-welded specimens also displayed higher notch sensitivity than the base metal. However, laser-cut and laser-welded specimens still possessed enough ductility to pass guided bend tests.

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Authors and Affiliations

  1. Industrial CO2 Laser Section, Synchrotron Utilization Division, Centre for Advanced Technology, P.O.: CAT, 452 013, Indore, India

    Harish Kumar, P. Ganesh, Rakesh Kaul, B. Tirumala Rao, Pragya Tiwari & A. K. Nath

  2. University Grants Commission-Department of Atomic Energy Consortium for Scientific Research, 452 017, Indore, India

    Ranjeet Brajpuriya & S. M. Chaudhari

Authors
  1. Harish Kumar
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  2. P. Ganesh
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  3. Rakesh Kaul
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  4. B. Tirumala Rao
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  5. Pragya Tiwari
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  6. A. K. Nath
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  7. Ranjeet Brajpuriya
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  8. S. M. Chaudhari
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Kumar, H., Ganesh, P., Kaul, R. et al. Laser welding of 3 mm thick laser-cut AISI 304 stainless steel sheet. J. of Materi Eng and Perform 15, 23–31 (2006). https://doi.org/10.1361/105994906X83385

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  • DOI: https://doi.org/10.1361/105994906X83385

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