Skip to main content

Research Repository

See what's under the surface

Advanced Search

Neutron strain scanning of fibre and diode laser welds in stainless steel and Ti6Al4V

Voisey, K.T.; Folkes, J.; Srithorn, J.; Hughes, D.J.

Authors

K.T. Voisey katy.voisey@nottingham.ac.uk

J. Folkes

J. Srithorn

D.J. Hughes



Abstract

Fibre lasers provide an unprecedented combination of high beam quality, brightness and low cost. Fibre laser beams can provide an exceptionally high power density beam with a relatively large depth of focus. Compared to more established laser welding technologies such as diode laser welding, fibre laser welding produces exceptionally narrow weld beads. As with all types of welding, fibre laser welding produces residual stresses in the material forming and adjacent to the weld. The SALSA instrument at the Institut Laue Langevin (ILL) has been used to make neutron diffraction measurements for both fibre and diode laser welded stainless steel 304 and Ti6Al4V. Clear diffraction peaks are obtained from stainless steel 304 and residual stress distributions are obtained. Little variation in residual stress distribution with welding parameters is seen. Ti6Al4V diffraction peaks are complicated by phase transformations on cooling. Transformed beta phase peaks in Ti6Al4V allow the extent of the heat affected zone to be determined.

Journal Article Type Article
Publication Date Jan 1, 2014
Journal Physics Procedia
Print ISSN 1875-3892
Electronic ISSN 1875-3892
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 56
APA6 Citation Voisey, K., Folkes, J., Srithorn, J., & Hughes, D. (2014). Neutron strain scanning of fibre and diode laser welds in stainless steel and Ti6Al4V. Physics Procedia, 56, doi:10.1016/j.phpro.2014.08.051
DOI https://doi.org/10.1016/j.phpro.2014.08.051
Keywords fibre laser; laser welding; residual stress; neutron diffraction
Publisher URL http://www.sciencedirect.com/science/article/pii/S1875389214001965
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

Files

284_LANE1014_VoiseyFINALerep.pdf (803 Kb)
PDF

Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





You might also like



Downloadable Citations

;