Deformation and residual stress of T-shaped joints fabricated by laser-arc hybrid welding for steel bridge members

Chen, Gang; Hirohata, Mikihito; Hyoma, Kengo et al.

Welding in the World, 2023, 68, 459-473

Number of Access:301（2025-07-27 16:21 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/93544

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Title
Deformation and residual stress of T-shaped joints fabricated by laser-arc hybrid welding for steel bridge members
Creator
CreatorName
Chen, Gang
NRID
1000050565140 1000050565140
ORCID
0000-0003-4013-7960 0000-0003-4013-7960
researchmap permalink
m_hirohata m_hirohata
Scopus Author ID
7006219862 7006219862
CreatorName
Hirohata, Mikihito
CreatorName
Hyoma, Kengo
CreatorName
Matsumoto, Naoyuki
CreatorName
Inose, Koutarou
Subject
Deformation and residual stress
Laser-arc hybrid welding
Steel bridge components
T-shaped joints
Thermal elastic–plastic analysis
Description
The version of record of this article, first published in Welding in the World, is available online at Publisher’s website: https://doi.org/10.1007/s40194-023-01650-z
Abstract
A series of experiments and analyses were performed for applying laser-arc hybrid welding to fabricating steel bridge components. Two-pass fully penetrated T-shaped joints using high-performance steel (SBHS400) having a 15-mm thickness were produced using hybrid welding. T-shaped joints having identical dimensions were manufactured using conventional arc welding. Without considering the inter-pass cooling time, the duration of hybrid welding was reduced by roughly 83% in comparison to that for GMAW. The average out-of-plane deformation caused by hybrid welding was decreased by 67% compared to arc welding. The fully coupled thermal elastic–plastic analyses were performed to replicate the distribution of residual stress in as-welded T-shaped joints. The analytical results indicated that the tensile residual stress range in hybrid-welded T-shaped joints was approximately one third (1/3) of that in arc-welded T-shaped joints. The weld joints produced by hybrid welding may have advantages over those produced by arc welding in terms of reducing welding deformation, decreasing welding residual stresses, and shortening welding time when manufacturing large steel bridge components.
Publisher
Springer Science and Business Media Deutschland GmbH
Source Title
Welding in the World
Volume (Issue)
68
Page
459-473
Date of Issued
2023-12-21
Language
English
Handle URL
https://hdl.handle.net/11094/93544
PISSN
00432288
eISSN
18786669
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1007/s40194-023-01650-z
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article