Physical Phenomena and Porosity Prevention Mechanism in Laser-Arc Hybrid Welding

Katayama, Seiji; Naito, Yasuaki; Uchiumi, Satoru; Mizutani, Masami

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タイトル	Physical Phenomena and Porosity Prevention Mechanism in Laser-Arc Hybrid Welding
著者	Katayama, Seiji Katayama, Seiji
	Naito, Yasuaki Naito, Yasuaki
	Uchiumi, Satoru Uchiumi, Satoru
	Mizutani, Masami Mizutani, Masami
キーワード等	Hybrid welding
	YAG laser
	TIG
	MIG
	Penetration
	Melt flows
	Bubbles
	Porosity
	Stainless steel
	Aluminium alloy
抄録	Hybrid welding of stainless steels or aluminium alloys was performed with the heat sources of YAG laser and TIG, or YAG laser and MIG, respectively. The effects of welding conditions and melt flows on penetration depth, geometry and porosity formation were investigated with the X-ray transmission real-time observation method. Melt flows on penetration depth and geometry were consequently confirmed. Concerning porosity suppression, in TIG-YAG hybrid welding of stainless steel, no formation of bubbles was attributed to the absence of pores. On the other hand, disappearance of bubbles from the concave molten pool surface due to the arc pressure played an important role in reducing porosity in YAG-MIG hybrid welding of aluminium alloys at high arc currents.
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	35
号	1
開始ページ	13
終了ページ	18
刊行年月	2006-07
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/12224
言語	英語

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.35(1) P.13-P.18
DC.title	Physical Phenomena and Porosity Prevention Mechanism in Laser-Arc Hybrid Welding
DC.creator	Katayama, Seiji
	Naito, Yasuaki
	Uchiumi, Satoru
	Mizutani, Masami
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	2006-07
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/12224
DC.subject	Hybrid welding
	YAG laser
	TIG
	MIG
	Penetration
	Melt flows
	Bubbles
	Porosity
	Stainless steel
	Aluminium alloy
DCTERMS.abstract	Hybrid welding of stainless steels or aluminium alloys was performed with the heat sources of YAG laser and TIG, or YAG laser and MIG, respectively. The effects of welding conditions and melt flows on penetration depth, geometry and porosity formation were investigated with the X-ray transmission real-time observation method. Melt flows on penetration depth and geometry were consequently confirmed. Concerning porosity suppression, in TIG-YAG hybrid welding of stainless steel, no formation of bubbles was attributed to the absence of pores. On the other hand, disappearance of bubbles from the concave molten pool surface due to the arc pressure played an important role in reducing porosity in YAG-MIG hybrid welding of aluminium alloys at high arc currents.
citation_title	Physical Phenomena and Porosity Prevention Mechanism in Laser-Arc Hybrid Welding
citation_author	Katayama, Seiji
	Naito, Yasuaki
	Uchiumi, Satoru
	Mizutani, Masami
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2006-07
citation_journal_title	Transactions of JWRI
citation_volume	35
citation_issue	1
citation_firstpage	13
citation_lastpage	18
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/12224
citation_keywords	Hybrid welding
	YAG laser
	TIG
	MIG
	Penetration
	Melt flows
	Bubbles
	Porosity
	Stainless steel
	Aluminium alloy

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