Studies on Two Failure Modes and Shear Strength of Various CMT Brazed Lap Joints of Dissimilar Materials

Lin, Jian; Ma, Ninshu; Lei, Yongping; Murakawa, Hidekazu

doi:https://doi.org/10.18910/23070

Studies on Two Failure Modes and Shear Strength of Various CMT Brazed Lap Joints of Dissimilar Materials

Lin, Jian; Ma, Ninshu; Lei, Yongping et al.

Transactions of JWRI, 2012, WSE2011, 105-111

Number of Access:863（2025-07-18 09:58 Counts）

Identifier to cite or link to this item: https://doi.org/10.18910/23070

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Title	Studies on Two Failure Modes and Shear Strength of Various CMT Brazed Lap Joints of Dissimilar Materials
Creator	CreatorName Lin, Jian
	NRID 1000010263328 1000010263328 ORCID 0000-0002-8088-4154 0000-0002-8088-4154 researchmap permalink ma.ninshu ma.ninshu Scopus Author ID 36343934100 36343934100 CreatorName Ma, Ninshu
	CreatorName Lei, Yongping
	NRID 1000060166270 1000060166270 CreatorName Murakawa, Hidekazu
Subject	Cold metal transfer
	Steel/Al dissimilar materials joint
	Shear strength
	Failure mode
	Numerical model
Abstract	Cold metal transfer (CMT) is a promising method to join steel/Al dissimilar materials together in vehicle body assembly. In this paper, shear strength and failure mode of CMT brazed lap joint of steel/Al dissimilar materials are investigated in detail by both experimental and numerical simulating method. Two failure modes, including interface fracture and fusion line fracture are found out. Failure mode transition and the factors influencing joint strength and failure mode are discussed in detail. Finally, a numerical model to estimate shear strength and failure mode of CMT brazed lap joint of dissimilar materials, is developed based on the failure criteria of interface layer and fusion line fracture. It is shown that the numerical model including interface layer and fusion line failure criteria can be used to predict shear strength and failure mode of CMT brazed lap joint of dissimilar materials. Steel sheet thickness and strength grade can have an obvious effect on joint strength of interface layer fracture because of stress concentration status variation at interface layer element. And joint strength of fusion line fracture can be improved by reducing micro defects in weld metal.
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
Source Title	Transactions of JWRI
Volume (Issue)	WSE2011
Page	105-111
Date of Issued	2012-03
Language	English
Handle URL	https://hdl.handle.net/11094/23070
DOI	https://doi.org/10.18910/23070
PISSN	03874508
NCID	AA00867058
Access Rights	open access
oaire:version	Version of Record
Category	紀要論文 Departmental Bulletin Paper
Category	Transactions of JWRI / Special Issue on Welding science and Engineering (WSE2011)

Resource Type	departmental bulletin paper
Local Type	Departmental Bulletin Paper
DCMI Type	Text
DCTERMS.bibliographicCitation	Transactions of JWRI. 2012, WSE2011, p. 105-111
DC.title	Studies on Two Failure Modes and Shear Strength of Various CMT Brazed Lap Joints of Dissimilar Materials
DC.creator	Lin, Jian
	Ma, Ninshu
	Lei, Yongping
	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	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2012-03
DC.subject	Cold metal transfer
	Steel/Al dissimilar materials joint
	Shear strength
	Failure mode
	Numerical model
DCTERMS.abstract	Cold metal transfer (CMT) is a promising method to join steel/Al dissimilar materials together in vehicle body assembly. In this paper, shear strength and failure mode of CMT brazed lap joint of steel/Al dissimilar materials are investigated in detail by both experimental and numerical simulating method. Two failure modes, including interface fracture and fusion line fracture are found out. Failure mode transition and the factors influencing joint strength and failure mode are discussed in detail. Finally, a numerical model to estimate shear strength and failure mode of CMT brazed lap joint of dissimilar materials, is developed based on the failure criteria of interface layer and fusion line fracture. It is shown that the numerical model including interface layer and fusion line failure criteria can be used to predict shear strength and failure mode of CMT brazed lap joint of dissimilar materials. Steel sheet thickness and strength grade can have an obvious effect on joint strength of interface layer fracture because of stress concentration status variation at interface layer element. And joint strength of fusion line fracture can be improved by reducing micro defects in weld metal.
DC.identifier	10.18910/23070
DC.format	23070
citation_title	Studies on Two Failure Modes and Shear Strength of Various CMT Brazed Lap Joints of Dissimilar Materials
citation_author	Lin, Jian
	Ma, Ninshu
	Lei, Yongping
	Murakawa, Hidekazu
citation_publisher	大阪大学接合科学研究所
citation_language	English
citation_date	2012-03
citation_journal_title	Transactions of JWRI
citation_volume	WSE2011
citation_firstpage	105
citation_lastpage	111
citation_public_url	https://hdl.handle.net/11094/23070
citation_doi_detail	10.18910/23070
citation_doi	https://doi.org/10.18910/23070

Studies on Two Failure Modes and Shear Strength of Various CMT Brazed Lap Joints of Dissimilar Materials

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