Residual Stresses in Flash Butt Welded Rail

Cal, Zhipeng; Nawafune, Masashi; Ma, Ninshu; Qu, Yuebo; Cao, Bin; Murakawa, Hidekazu

doi:https://doi.org/10.18910/4606

このアイテムのアクセス数:250件（2023-11-30 12:57 集計）

このアイテムへのリンクには次のURLをご利用ください: https://doi.org/10.18910/4606

このアイテムへのリンクには次のURLをご利用ください: https://hdl.handle.net/11094/4606

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jwri40_01_079	pdf	なし	580 KB	270	2012.09.22

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タイトル	Residual Stresses in Flash Butt Welded Rail
著者	著者名 Cal, Zhipeng
	著者名 Nawafune, Masashi
	NRID 1000010263328 1000010263328 ORCID 0000-0002-8088-4154 0000-0002-8088-4154 researchmap permalink ma.ninshu ma.ninshu Scopus Author ID 36343934100 36343934100 著者名 Ma, Ninshu
	著者名 Qu, Yuebo
	著者名 Cao, Bin
	NRID 1000060166270 1000060166270 著者名 Murakawa, Hidekazu
キーワード等	Flash butt welding
	U71Mn Rail
	Residual Stress
	Phase Transformation
	Measurement
	FEM Simulation
抄録	The residual stresses on the surface of a rail joined by flash-butt welding are measured using a hole-drilling method and the thermal elastic-plastic deformation process considering the phase transformation are simulated using FEM code JWRIAN. The residual stresses measured by experiments and computed by FEM have an acceptable agreement in accuracy. The simulation results show that the phase transformation in the cooling stage has a significant effect on the residual stress distribution and its values. The tensile or compressive state for residual stresses near the welding section strongly depends on the phase transformation which occurred during the cooling process. The biaxial tensile stresses are produced at the web near the fusion line of the flash butt welded rail. The biaxial tensile stresses increase the risk of cracks. Although the Martensite phase transformation during the cooling process at top and bottom near the fusion line produces compressive stress, it increases the brittleness at the same time. Therefore, the proper heat treatment after welding is still necessary in order to improve the toughness.
出版者	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
収録物名	Transactions of JWRI
巻(号)	40(1)
ページ	79-87
刊行年月	2011-06
言語	英語
ハンドルURL	https://hdl.handle.net/11094/4606
DOI	https://doi.org/10.18910/4606
PISSN	03874508
NCID	AA00867058
アクセス権	open access
出版タイプ	Version of Record
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.40 No.1 (2011-06)

資源タイプ	紀要論文
ローカル資源タイプ	紀要論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Transactions of JWRI. 2011, 40(1), p. 79-87
DC.title	Residual Stresses in Flash Butt Welded Rail
DC.creator	Cal, Zhipeng
	Nawafune, Masashi
	Ma, Ninshu
	Qu, Yuebo
	Cao, Bin
	Murakawa, Hidekazu
DC.publisher	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2011-06
DC.subject	Flash butt welding
	U71Mn Rail
	Residual Stress
	Phase Transformation
	Measurement
	FEM Simulation
DCTERMS.abstract	The residual stresses on the surface of a rail joined by flash-butt welding are measured using a hole-drilling method and the thermal elastic-plastic deformation process considering the phase transformation are simulated using FEM code JWRIAN. The residual stresses measured by experiments and computed by FEM have an acceptable agreement in accuracy. The simulation results show that the phase transformation in the cooling stage has a significant effect on the residual stress distribution and its values. The tensile or compressive state for residual stresses near the welding section strongly depends on the phase transformation which occurred during the cooling process. The biaxial tensile stresses are produced at the web near the fusion line of the flash butt welded rail. The biaxial tensile stresses increase the risk of cracks. Although the Martensite phase transformation during the cooling process at top and bottom near the fusion line produces compressive stress, it increases the brittleness at the same time. Therefore, the proper heat treatment after welding is still necessary in order to improve the toughness.
DC.identifier	10.18910/4606
DC.format	application/pdf
citation_doi	https://doi.org/10.18910/4606
citation_title	Residual Stresses in Flash Butt Welded Rail
citation_author	Cal, Zhipeng
	Nawafune, Masashi
	Ma, Ninshu
	Qu, Yuebo
	Cao, Bin
	Murakawa, Hidekazu
citation_publisher	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
citation_language	英語
citation_date	2011-06
citation_journal_title	Transactions of JWRI
citation_volume	40
citation_issue	1
citation_firstpage	79
citation_lastpage	87
citation_public_url	https://hdl.handle.net/11094/4606
citation_doi_detail	10.18910/4606

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