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Friction Stir Welding of HSLA-65 Steel: Part II. The Influence of Weld Speed and Tool Material on the Residual Stress Distribution and Tool Wear

Steuwer, Axel LU ; Barnes, S. J.; Altenkirch, J.; Johnson, R. and Withers, P. J. (2012) In Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science 43A(7). p.2356-2365
Abstract
A set of single pass full penetration friction stir bead-on-plate and butt welds in HSLA-65 steel were produced using a range of traverse speeds (50 to 500 mm/min) and two tool materials (W-Re and PCBN). Part I described the influence of process and tool parameters on the microstructure in the weld region. This article focuses on the influence of these parameters on residual stress, but the presence of retained austenite evident in the diffraction pattern and X-ray tomographic investigations of tool material depositions are also discussed. The residual stress measurements were made using white beam synchrotron X-ray diffraction (SXRD). The residual stresses are affected by the traverse speed as well as the weld tool material. While the... (More)
A set of single pass full penetration friction stir bead-on-plate and butt welds in HSLA-65 steel were produced using a range of traverse speeds (50 to 500 mm/min) and two tool materials (W-Re and PCBN). Part I described the influence of process and tool parameters on the microstructure in the weld region. This article focuses on the influence of these parameters on residual stress, but the presence of retained austenite evident in the diffraction pattern and X-ray tomographic investigations of tool material depositions are also discussed. The residual stress measurements were made using white beam synchrotron X-ray diffraction (SXRD). The residual stresses are affected by the traverse speed as well as the weld tool material. While the peak residual stress at the tool shoulders remained largely unchanged (approximately equal to the nominal yield stress (450 MPa)) irrespective of weld speed or tool type, for the W-Re welds, the width of the tensile section of the residual stress profile decreased with increasing traverse speed (thus decreasing line energy). The effect of increasing traverse speed on the width of the tensile zone was much less pronounced for the PCBN tool material. (Less)
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author
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type
Contribution to journal
publication status
published
subject
in
Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science
volume
43A
issue
7
pages
2356 - 2365
publisher
Springer
external identifiers
  • wos:000304404000017
  • scopus:84861839144
ISSN
1073-5623
DOI
10.1007/s11661-011-0643-x
language
English
LU publication?
yes
id
a4ec32fa-ec87-4ff0-81d0-a37467dd5e41 (old id 2906433)
date added to LUP
2012-07-23 16:45:13
date last changed
2017-07-23 04:27:01
@article{a4ec32fa-ec87-4ff0-81d0-a37467dd5e41,
  abstract     = {A set of single pass full penetration friction stir bead-on-plate and butt welds in HSLA-65 steel were produced using a range of traverse speeds (50 to 500 mm/min) and two tool materials (W-Re and PCBN). Part I described the influence of process and tool parameters on the microstructure in the weld region. This article focuses on the influence of these parameters on residual stress, but the presence of retained austenite evident in the diffraction pattern and X-ray tomographic investigations of tool material depositions are also discussed. The residual stress measurements were made using white beam synchrotron X-ray diffraction (SXRD). The residual stresses are affected by the traverse speed as well as the weld tool material. While the peak residual stress at the tool shoulders remained largely unchanged (approximately equal to the nominal yield stress (450 MPa)) irrespective of weld speed or tool type, for the W-Re welds, the width of the tensile section of the residual stress profile decreased with increasing traverse speed (thus decreasing line energy). The effect of increasing traverse speed on the width of the tensile zone was much less pronounced for the PCBN tool material.},
  author       = {Steuwer, Axel and Barnes, S. J. and Altenkirch, J. and Johnson, R. and Withers, P. J.},
  issn         = {1073-5623},
  language     = {eng},
  number       = {7},
  pages        = {2356--2365},
  publisher    = {Springer},
  series       = {Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science},
  title        = {Friction Stir Welding of HSLA-65 Steel: Part II. The Influence of Weld Speed and Tool Material on the Residual Stress Distribution and Tool Wear},
  url          = {http://dx.doi.org/10.1007/s11661-011-0643-x},
  volume       = {43A},
  year         = {2012},
}