Advanced

Residual stresses, microstructure and tensile properties in Ti-6Al-4V friction stir welds

Steuwer, Axel LU ; Hattingh, D. G.; James, M. N.; Singh, U. and Buslaps, T. (2012) In Science and Technology of Welding and Joining 17(7). p.525-533
Abstract
This paper reports the results of a systematic investigation of residual stresses as a function of welding speed in a set of Ti-6Al-4V friction stir welds. The investigation focuses on residual stress but links these data with microstructural information derived from micrographs and hardness measurements as well as mechanical testing results. Residual stresses were determined using energy dispersive synchrotron X-ray diffraction, which allows phase specific stresses to be distinguished. The data presented in this paper demonstrate that welds with high tensile properties can be obtained, which also have relatively low peak tensile residual stress values of similar to 30% of the tensile strength. The data also show a clear correlation... (More)
This paper reports the results of a systematic investigation of residual stresses as a function of welding speed in a set of Ti-6Al-4V friction stir welds. The investigation focuses on residual stress but links these data with microstructural information derived from micrographs and hardness measurements as well as mechanical testing results. Residual stresses were determined using energy dispersive synchrotron X-ray diffraction, which allows phase specific stresses to be distinguished. The data presented in this paper demonstrate that welds with high tensile properties can be obtained, which also have relatively low peak tensile residual stress values of similar to 30% of the tensile strength. The data also show a clear correlation between heat input and the width of the residual stress profile. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Residual stress, Ti-6Al-4V, Titanium, Friction stir weld, Microstructure, Synchrotron X-ray diffraction
in
Science and Technology of Welding and Joining
volume
17
issue
7
pages
525 - 533
publisher
Maney Publishing
external identifiers
  • wos:000309514000002
  • scopus:84867044062
ISSN
1362-1718
DOI
10.1179/136217112X13439160184196
language
English
LU publication?
yes
id
1a83a322-0036-4ab1-8fc4-da7ec22db806 (old id 3187519)
date added to LUP
2012-12-06 12:24:35
date last changed
2017-08-13 03:26:23
@article{1a83a322-0036-4ab1-8fc4-da7ec22db806,
  abstract     = {This paper reports the results of a systematic investigation of residual stresses as a function of welding speed in a set of Ti-6Al-4V friction stir welds. The investigation focuses on residual stress but links these data with microstructural information derived from micrographs and hardness measurements as well as mechanical testing results. Residual stresses were determined using energy dispersive synchrotron X-ray diffraction, which allows phase specific stresses to be distinguished. The data presented in this paper demonstrate that welds with high tensile properties can be obtained, which also have relatively low peak tensile residual stress values of similar to 30% of the tensile strength. The data also show a clear correlation between heat input and the width of the residual stress profile.},
  author       = {Steuwer, Axel and Hattingh, D. G. and James, M. N. and Singh, U. and Buslaps, T.},
  issn         = {1362-1718},
  keyword      = {Residual stress,Ti-6Al-4V,Titanium,Friction stir weld,Microstructure,Synchrotron X-ray diffraction},
  language     = {eng},
  number       = {7},
  pages        = {525--533},
  publisher    = {Maney Publishing},
  series       = {Science and Technology of Welding and Joining},
  title        = {Residual stresses, microstructure and tensile properties in Ti-6Al-4V friction stir welds},
  url          = {http://dx.doi.org/10.1179/136217112X13439160184196},
  volume       = {17},
  year         = {2012},
}