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A comparative study of single mode fibre laser and Nd:YAG laser welding of Ti-6Al-4V

Chen, H-C and Blackburn, J. and Pinkerton, A.J. and Li, L. and Hilton, Paul (2008) A comparative study of single mode fibre laser and Nd:YAG laser welding of Ti-6Al-4V. In: Proceedings of the 3rd Pacific International Conference on Applications of Lasers and Optics (PICALO). Laser Institute of America, pp. 163-168.

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Abstract

This study considers welding of Ti-6Al-4V, which is widely used in the chemical, automotive, aerospace and medical industries due to its high strength-to-weight ratio and corrosion resistance. Bead-on-plate melt on 2.15 mm thick plates with a 1 kW single mode fibre laser and a continuous wave 4 kW Nd:YAG laser are investigated and compared. The fibre laser was found to produce narrower welds with finer microstructure using less than 30% the laser power required by the Nd:YAG laser. However, levels of porosity were generally higher meaning the Nd:YAG laser welds were classified as higher quality according to American Welding Standard D17.1:2007. In both cases there was a trend for lower porosity at a higher laser power when the welding speed was higher. The difference in porosity levels may have been partly or wholly due to the different inert gas shielding systems used.

Item Type: Contribution in Book/Report/Proceedings
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Departments: Faculty of Science and Technology > Engineering
ID Code: 59701
Deposited By: ep_importer_pure
Deposited On: 02 Nov 2012 16:49
Refereed?: No
Published?: Published
Last Modified: 10 Apr 2014 01:45
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/59701

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