Details
| Original language | English |
|---|---|
| Pages (from-to) | 801-815 |
| Number of pages | 15 |
| Journal | Journal of thermal stresses |
| Volume | 43 |
| Issue number | 7 |
| Early online date | 24 Apr 2020 |
| Publication status | Published - 2 Jul 2020 |
| Externally published | Yes |
Abstract
The residual stresses (RSs) generated from partial penetration repair welding of a specimen extracted from the 4th stage vane of a gas turbine replace studied. The RSs are maximum in the heat-affected zone, beneath the weld along the weld center at the specimen mid-section. The RS field tends to exhibit over a large volume beneath the weld bead where severe restraint conditions exist in the repair welding. The stress triaxiality field was presented as an assessment tool to find the critical areas of welding RSs. The maximum value of stress triaxiality occurs beneath the weld bead in somewhere different from maximum residual stress locations. This indicates the role of a through-thickness component of RSs in the integrity of repair welds.
Keywords
- Heat-affected zone, hole-drilling, IN939 superalloy, repair weld, residual stresses, stress triaxiality, X-ray diffraction
ASJC Scopus subject areas
- Materials Science(all)
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Journal of thermal stresses, Vol. 43, No. 7, 02.07.2020, p. 801-815.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Evaluations of residual stresses in repair welding of Ni-based IN939 superalloy
AU - Moattari, M.
AU - Shokrieh, M. M.
AU - Moshayedi, H.
AU - Kazempour-Liasi, H.
N1 - Funding Information: This research was supported by Iran National Science Foundation (INSF), Grant No. 97005493. Publisher Copyright: © 2020, © 2020 Taylor & Francis Group, LLC.
PY - 2020/7/2
Y1 - 2020/7/2
N2 - The residual stresses (RSs) generated from partial penetration repair welding of a specimen extracted from the 4th stage vane of a gas turbine replace studied. The RSs are maximum in the heat-affected zone, beneath the weld along the weld center at the specimen mid-section. The RS field tends to exhibit over a large volume beneath the weld bead where severe restraint conditions exist in the repair welding. The stress triaxiality field was presented as an assessment tool to find the critical areas of welding RSs. The maximum value of stress triaxiality occurs beneath the weld bead in somewhere different from maximum residual stress locations. This indicates the role of a through-thickness component of RSs in the integrity of repair welds.
AB - The residual stresses (RSs) generated from partial penetration repair welding of a specimen extracted from the 4th stage vane of a gas turbine replace studied. The RSs are maximum in the heat-affected zone, beneath the weld along the weld center at the specimen mid-section. The RS field tends to exhibit over a large volume beneath the weld bead where severe restraint conditions exist in the repair welding. The stress triaxiality field was presented as an assessment tool to find the critical areas of welding RSs. The maximum value of stress triaxiality occurs beneath the weld bead in somewhere different from maximum residual stress locations. This indicates the role of a through-thickness component of RSs in the integrity of repair welds.
KW - Heat-affected zone
KW - hole-drilling
KW - IN939 superalloy
KW - repair weld
KW - residual stresses
KW - stress triaxiality
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=85083902410&partnerID=8YFLogxK
U2 - 10.1080/01495739.2020.1751759
DO - 10.1080/01495739.2020.1751759
M3 - Article
AN - SCOPUS:85083902410
VL - 43
SP - 801
EP - 815
JO - Journal of thermal stresses
JF - Journal of thermal stresses
SN - 0149-5739
IS - 7
ER -