The effect of contamination on the metallurgy of commercially pure titanium welded with a pulsed laser beam

Buddery, A, Kelly, P, Drennan, J and Dargusch, M (2011) The effect of contamination on the metallurgy of commercially pure titanium welded with a pulsed laser beam. Journal of Materials Science, 46 8: 2726-2732. doi:10.1007/s10853-010-5145-5


Author Buddery, A
Kelly, P
Drennan, J
Dargusch, M
Title The effect of contamination on the metallurgy of commercially pure titanium welded with a pulsed laser beam
Journal name Journal of Materials Science   Check publisher's open access policy
ISSN 0022-2461
1573-4803
Publication date 2011-04
Year available 2010
Sub-type Article (original research)
DOI 10.1007/s10853-010-5145-5
Volume 46
Issue 8
Start page 2726
End page 2732
Total pages 7
Place of publication New York, United States
Publisher Springer New York LLC
Collection year 2011
Language eng
Abstract Commercially pure titanium components in medical devices are commonly joined using pulsed laser welding because of the precision, low heat input and low thermal distortion it affords. Despite the importance of this technique in structural components, such as dental prosthesis, there is still a limited understanding of the factors which affect the weld metallurgy. In this study the effect of O, N and Fe on the weld metallurgy, as both external and bulk contaminants, is investigated. The results indicate that Fe has the most pronounced effect on the nature of the allotropic β-α phase transformation, suppressing the massive transformation and encouraging the formation of martensite. This finding is in contrast to the effects of O and N which are usually the subject of studies reported in the literature. Whilst O and N do cause more hardening than Fe, this seems to be mainly through more pronounced solid solution strengthening. The study also demonstrates the inadequacy of relying on ASTM grades to predict weld properties and the need to adequately characterise the base alloys. © 2010 Springer Science+Business Media, LLC.
Keyword Gas
Joint
Transformation
Alloys
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online: 16 December 2010

 
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Created: Sun, 13 Mar 2011, 00:11:44 EST