Microstructure and Hardness Distribution of Friction Stir Welded 1050 Al and IF Steel with Different Original Grain Size

Sun, Yufeng; Fujii, Hidetoshi; Takada, Yutaka; Tsuji, Nobuhiro; Nakata, Kazuhiro; Nogi, Kiyoshi

doi:https://doi.org/10.18910/4695

Microstructure and Hardness Distribution of Friction Stir Welded 1050 Al and IF Steel with Different Original Grain Size

Sun, Yufeng; Fujii, Hidetoshi; Takada, Yutaka et al.

Transactions of JWRI, 2009, 38(2), 43-48

Number of Access:535（2025-08-13 22:21 Counts）

Identifier to cite or link to this item: https://doi.org/10.18910/4695

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Title	Microstructure and Hardness Distribution of Friction Stir Welded 1050 Al and IF Steel with Different Original Grain Size
Creator	CreatorName Sun, Yufeng
	NRID 1000000247230 1000000247230 ORCID 0000-0002-5023-3844 0000-0002-5023-3844 researchmap permalink read0051741 read0051741 Scopus Author ID 7403071460 7403071460 CreatorName Fujii, Hidetoshi
	CreatorName Takada, Yutaka
	NRID 1000030263213 1000030263213 CreatorName Tsuji, Nobuhiro
	NRID 1000080112069 1000080112069 CreatorName Nakata, Kazuhiro
	NRID 1000040029335 1000040029335 CreatorName Nogi, Kiyoshi
Subject	Friction stir welding
	Accumulative roll bonding
	Ultrafine grained structure
	Vickers hardness
Abstract	In this study, 2mm-thick commercial 1050-Al plates and IF steel plates with three different kinds of original grain size were subjected to the friction stir welding process. These three kinds of samples with different grain sizes were obtained by accumulative roll bonding after a 5 cycles process, 5 cycles ARB process plus annealing and fully annealing, respectively. The microstructure evolution and Vickers hardness in the stir zone of all the samples were investigated. For both 1050-Al and IF steel, the ARB plus annealed samples with an intermediate original grain size finally produced the most refined microstructure and highest Vickers hardness in the stir zone. While for the ARB processed samples with ultrafine grained structure, significant grain growth and decrease in hardness occurred in the stir zone. The microstructure coarsening in the stir zone is suggested to be caused by the heating of the unstable structure in the ultrafine grained materials during friction stir welding process.
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)	38(2)
Page	43-48
Date of Issued	2009-12
Language	English
Handle URL	https://hdl.handle.net/11094/4695
DOI	https://doi.org/10.18910/4695
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 / Vol.38 No.2 (2009-12)

Resource Type	departmental bulletin paper
Local Type	Departmental Bulletin Paper
DCMI Type	Text
DCTERMS.bibliographicCitation	Transactions of JWRI. 2009, 38(2), p. 43-48
DC.title	Microstructure and Hardness Distribution of Friction Stir Welded 1050 Al and IF Steel with Different Original Grain Size
DC.creator	Sun, Yufeng
	Fujii, Hidetoshi
	Takada, Yutaka
	Tsuji, Nobuhiro
	Nakata, Kazuhiro
	Nogi, Kiyoshi
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	2009-12
DC.subject	Friction stir welding
	Accumulative roll bonding
	Ultrafine grained structure
	Vickers hardness
DCTERMS.abstract	In this study, 2mm-thick commercial 1050-Al plates and IF steel plates with three different kinds of original grain size were subjected to the friction stir welding process. These three kinds of samples with different grain sizes were obtained by accumulative roll bonding after a 5 cycles process, 5 cycles ARB process plus annealing and fully annealing, respectively. The microstructure evolution and Vickers hardness in the stir zone of all the samples were investigated. For both 1050-Al and IF steel, the ARB plus annealed samples with an intermediate original grain size finally produced the most refined microstructure and highest Vickers hardness in the stir zone. While for the ARB processed samples with ultrafine grained structure, significant grain growth and decrease in hardness occurred in the stir zone. The microstructure coarsening in the stir zone is suggested to be caused by the heating of the unstable structure in the ultrafine grained materials during friction stir welding process.
DC.identifier	10.18910/4695
DC.format	4695
citation_title	Microstructure and Hardness Distribution of Friction Stir Welded 1050 Al and IF Steel with Different Original Grain Size
citation_author	Sun, Yufeng
	Fujii, Hidetoshi
	Takada, Yutaka
	Tsuji, Nobuhiro
	Nakata, Kazuhiro
	Nogi, Kiyoshi
citation_publisher	大阪大学接合科学研究所
citation_language	English
citation_date	2009-12
citation_journal_title	Transactions of JWRI
citation_volume	38
citation_issue	2
citation_firstpage	43
citation_lastpage	48
citation_public_url	https://hdl.handle.net/11094/4695
citation_doi_detail	10.18910/4695
citation_doi	https://doi.org/10.18910/4695

Microstructure and Hardness Distribution of Friction Stir Welded 1050 Al and IF Steel with Different Original Grain Size

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