Microstructure and Mechanical Properties of Friction Stir Welded Pure Cu Plates

Sun, Yufeng; Xu, Nan; Morisada, Yoshiaki; Fujii, Hidetoshi

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タイトル	Microstructure and Mechanical Properties of Friction Stir Welded Pure Cu Plates
著者	Sun, Yufeng Sun, Yufeng
	Xu, Nan Xu, Nan
	Morisada, Yoshiaki Morisada, Yoshiaki
	Fujii, Hidetoshi Fujii, Hidetoshi
キーワード等	Friction stir welding
	Microstructure
	Mechanical property
	pure Cu
抄録	The process window for the friction stir welding of fully annealed commercial pure Cu was determined at an applied load of 1000kg, which includes a welding speed that ranged from 200 to 800 mm/min, and a rotation speed that ranged from 500 to 1300 rpm. In the stir zone of sound welds, a remarkably refined microstructure with the average grain size of 6.9 μm can be obtained by decreasing the rotation speed to 1000rpm. However, the grain size becomes larger than the base metal when the rotation speed is higher than 1300rpm. The stir zone may contain a structure composed of a high density dislocation cell of large developed annealing twin. The joints welded at a rotation speed less than 1300 rpm fractured in the base metal. However, the joints welded at a rotation speed higher than 1300 rpm fractured in the stir zone. The mechanism of the mechanical property changes in the Cu welds was proposed and clarified from the viewpoint of microstructural evolution.
公開者	大阪大学接合科学研究所
公開者の別表記	Joining and Welding Research Institute, Osaka University
公開者 (ヨミ)	オオサカダイガクセツゴウカガクケンキュウジョ
掲載誌名	Transactions of JWRI
巻	41
号	1
開始ページ	53
終了ページ	58
刊行年月	2012-06
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/23160
言語	英語
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.41 No.1 (2012-06)

著者版フラグ	publisher
NII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.41(1) P.53-P.58
DC.title	Microstructure and Mechanical Properties of Friction Stir Welded Pure Cu Plates
DC.creator	Sun, Yufeng
	Xu, Nan
	Morisada, Yoshiaki
	Fujii, Hidetoshi
DC.publisher	大阪大学接合科学研究所
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2012-06
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/23160
DC.subject	Friction stir welding
	Microstructure
	Mechanical property
	pure Cu
DCTERMS.abstract	The process window for the friction stir welding of fully annealed commercial pure Cu was determined at an applied load of 1000kg, which includes a welding speed that ranged from 200 to 800 mm/min, and a rotation speed that ranged from 500 to 1300 rpm. In the stir zone of sound welds, a remarkably refined microstructure with the average grain size of 6.9 μm can be obtained by decreasing the rotation speed to 1000rpm. However, the grain size becomes larger than the base metal when the rotation speed is higher than 1300rpm. The stir zone may contain a structure composed of a high density dislocation cell of large developed annealing twin. The joints welded at a rotation speed less than 1300 rpm fractured in the base metal. However, the joints welded at a rotation speed higher than 1300 rpm fractured in the stir zone. The mechanism of the mechanical property changes in the Cu welds was proposed and clarified from the viewpoint of microstructural evolution.
citation_title	Microstructure and Mechanical Properties of Friction Stir Welded Pure Cu Plates
citation_author	Sun, Yufeng
	Xu, Nan
	Morisada, Yoshiaki
	Fujii, Hidetoshi
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2012-06
citation_journal_title	Transactions of JWRI
citation_volume	41
citation_issue	1
citation_firstpage	53
citation_lastpage	58
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/23160
citation_keywords	Friction stir welding
	Microstructure
	Mechanical property
	pure Cu

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