Charpy absorbed energy in simulated heat-affected zone of laser-arc hybrid welded joints by high-strength steel for bridge structures

Chen, Gang; Hirohata, Mikihito; Sakai, Natsumi; Hyoma, Kengo; Matsumoto, Naoyuki; Inose, Koutarou

doi:https://doi.org/10.1007/s00170-023-11420-2

Charpy absorbed energy in simulated heat-affected zone of laser-arc hybrid welded joints by high-strength steel for bridge structures

Chen, Gang; Hirohata, Mikihito; Sakai, Natsumi et al.

International Journal of Advanced Manufacturing Technology, 2023, 127, 2655-2669

アクセス数:325件（2025-07-26 15:20 集計）

固定URL: https://hdl.handle.net/11094/92498

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タイトル	Charpy absorbed energy in simulated heat-affected zone of laser-arc hybrid welded joints by high-strength steel for bridge structures
著者	著者名 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 著者名 Hirohata, Mikihito
	著者名 Sakai, Natsumi
	著者名 Hyoma, Kengo
	著者名 Matsumoto, Naoyuki
	著者名 Inose, Koutarou
キーワード等	Butt-welded joints
	Charpy impact test
	Laser-arc hybrid welding
	Simulated thermal cycle test
	Steels for bridge high performance structures
内容	Chen G., Hirohata M., Sakai N., et al. Charpy absorbed energy in simulated heat-affected zone of laser-arc hybrid welded joints by high-strength steel for bridge structures. International Journal of Advanced Manufacturing Technology 127, 2655 (2023); https://doi.org/10.1007/s00170-023-11420-2.
抄録	The application of laser-arc hybrid welding (so-called, hybrid welding) to the fabrication of steel bridge members has recently been investigated. One-pass full-penetration butt joints of steels for bridge high-performance structure (SBHS400 and SBHS500) with a thickness of 15 mm were performed by hybrid welding. The sound butt joints by hybrid welding were confirmed by a series of tests. The Charpy impact test was performed on the test pieces extracted from the hybrid welded butt joints with specified test temperatures. A phenomenon known as fracture path deviation (FPD) occurred in most test pieces, due to a large variation in material properties of the heat-affected zone (HAZ), resulting in the difficulty of estimating the toughness of HAZ in hybrid welded joints. Therefore, the Charpy impact test was conducted on the test pieces subjected to the welding thermal cycle tests of hybrid welding, which can exclude the heterogeneity of material properties and obtain the Charpy absorbed energy of the HAZ with high accuracy. The test results indicated that FPD was not observed in all thermal cycle simulated test pieces because the uniform metallographic structures in the vicinity of the notch were formed by the simulated thermal cycle tests, and all thermal cycle simulated test pieces satisfied 47 J at the specified test temperatures, a value that prevents brittle fracture for SBHS. Besides, for investigating the effect of the high Charpy absorbed energy guaranteed by SBHS on the toughness of hybrid welded joints, the Charpy absorbed energy of the thermal cycle simulated test pieces of SBHS and those of conventional steel (SM400B) were compared. The results showed that some of the thermal cycle simulated test pieces of SM400B failed to satisfy 27 J, suggesting that SBHS may ensure a Charpy absorbed energy of 47 J or more in the HAZ of hybrid welded joints.
出版者	Springer Science and Business Media Deutschland GmbH
収録物名	International Journal of Advanced Manufacturing Technology
巻(号)	127
ページ	2655-2669
刊行年月	2023-07-01
言語	英語
ハンドルURL	https://hdl.handle.net/11094/92498
PISSN	02683768
eISSN	14333015
NCID	AA10693929
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1007/s00170-023-11420-2
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	International Journal of Advanced Manufacturing Technology. 2023, 127, p. 2655-2669
DC.title	Charpy absorbed energy in simulated heat-affected zone of laser-arc hybrid welded joints by high-strength steel for bridge structures
DC.creator	Chen, Gang
	Hirohata, Mikihito
	Sakai, Natsumi
	Hyoma, Kengo
	Matsumoto, Naoyuki
	Inose, Koutarou
DC.publisher	Springer Science and Business Media Deutschland GmbH
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2023-07-01
DC.identifier	https://doi.org/10.1007/s00170-023-11420-2
DC.subject	Butt-welded joints
	Charpy impact test
	Laser-arc hybrid welding
	Simulated thermal cycle test
	Steels for bridge high performance structures
DC.description	Chen G., Hirohata M., Sakai N., et al. Charpy absorbed energy in simulated heat-affected zone of laser-arc hybrid welded joints by high-strength steel for bridge structures. International Journal of Advanced Manufacturing Technology 127, 2655 (2023); https://doi.org/10.1007/s00170-023-11420-2.
DCTERMS.abstract	The application of laser-arc hybrid welding (so-called, hybrid welding) to the fabrication of steel bridge members has recently been investigated. One-pass full-penetration butt joints of steels for bridge high-performance structure (SBHS400 and SBHS500) with a thickness of 15 mm were performed by hybrid welding. The sound butt joints by hybrid welding were confirmed by a series of tests. The Charpy impact test was performed on the test pieces extracted from the hybrid welded butt joints with specified test temperatures. A phenomenon known as fracture path deviation (FPD) occurred in most test pieces, due to a large variation in material properties of the heat-affected zone (HAZ), resulting in the difficulty of estimating the toughness of HAZ in hybrid welded joints. Therefore, the Charpy impact test was conducted on the test pieces subjected to the welding thermal cycle tests of hybrid welding, which can exclude the heterogeneity of material properties and obtain the Charpy absorbed energy of the HAZ with high accuracy. The test results indicated that FPD was not observed in all thermal cycle simulated test pieces because the uniform metallographic structures in the vicinity of the notch were formed by the simulated thermal cycle tests, and all thermal cycle simulated test pieces satisfied 47 J at the specified test temperatures, a value that prevents brittle fracture for SBHS. Besides, for investigating the effect of the high Charpy absorbed energy guaranteed by SBHS on the toughness of hybrid welded joints, the Charpy absorbed energy of the thermal cycle simulated test pieces of SBHS and those of conventional steel (SM400B) were compared. The results showed that some of the thermal cycle simulated test pieces of SM400B failed to satisfy 27 J, suggesting that SBHS may ensure a Charpy absorbed energy of 47 J or more in the HAZ of hybrid welded joints.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	92498
citation_title	Charpy absorbed energy in simulated heat-affected zone of laser-arc hybrid welded joints by high-strength steel for bridge structures
citation_author	Chen, Gang
	Hirohata, Mikihito
	Sakai, Natsumi
	Hyoma, Kengo
	Matsumoto, Naoyuki
	Inose, Koutarou
citation_publisher	Springer Science and Business Media Deutschland GmbH
citation_language	英語
citation_date	2023-07-01
citation_journal_title	International Journal of Advanced Manufacturing Technology
citation_volume	127
citation_firstpage	2655
citation_lastpage	2669
citation_doi	https://doi.org/10.1007/s00170-023-11420-2
citation_public_url	https://hdl.handle.net/11094/92498

Charpy absorbed energy in simulated heat-affected zone of laser-arc hybrid welded joints by high-strength steel for bridge structures

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