Wear Behavior of Sintered Magnesium Matrix Composites Reinforced with Mg2Si Particle under Wet Sliding Conditions

Kondoh, Katsuyoshi; Umeda, Junko; Kawabata, Kenshi; Seki, Yoshikazu; Kawamura, Yoshihito

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タイトル	Wear Behavior of Sintered Magnesium Matrix Composites Reinforced with Mg2Si Particle under Wet Sliding Conditions
著者	Kondoh, Katsuyoshi Kondoh, Katsuyoshi
	Umeda, Junko Umeda, Junko
	Kawabata, Kenshi Kawabata, Kenshi
	Seki, Yoshikazu Seki, Yoshikazu
	Kawamura, Yoshihito Kawamura, Yoshihito
キーワード等	Magnesium Composite
	Mg₂Si Particle
	Repeated Plastic Working
	Adhesive
	Abrasive
	Friction Coefficient
抄録	For evaluation of wear behavior in the sliding conditions, powder metallurgy Mg97Y₂Zn₁ alloy composites reinforced with additive Mg₂Si particles prepared via the repeated plastic working (RPW) process were investigated. The RPW process was effective in refining Mg₂Si particles of 5 to 10 wt% and grains of the matrix via dynamic recrystallization. When increasing the repetition number of RPW process from 200 to 600 cycles, the particle size of Mg₂Si additives changed from 8μm to 1～2μm, and the grain size of the magnesium matrix was 1μm or less. With regard to the defensive and offensive behavior in wet wear test, this composite had superior adhesive wear resistance compared with the conventional magnesium alloys because of its high matrix hardness at elevated temperature. The uniform distribution of refined Mg₂Si particles was useful for improving both defensive and offensive properties against AZ31B counter disk specimens. Deep scratches of the disk surface were caused by coarse Mg₂Si additives, and resulted in an unstable and high friction coefficient.
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	37
号	1
開始ページ	45
終了ページ	49
刊行年月	2008-07
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/11498
言語	英語
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.37 No.1 (2008-07)

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.37(1) P.45-P.49
DC.title	Wear Behavior of Sintered Magnesium Matrix Composites Reinforced with Mg2Si Particle under Wet Sliding Conditions
DC.creator	Kondoh, Katsuyoshi
	Umeda, Junko
	Kawabata, Kenshi
	Seki, Yoshikazu
	Kawamura, Yoshihito
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	2008-07
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/11498
DC.subject	Magnesium Composite
	Mg₂Si Particle
	Repeated Plastic Working
	Adhesive
	Abrasive
	Friction Coefficient
DCTERMS.abstract	For evaluation of wear behavior in the sliding conditions, powder metallurgy Mg97Y₂Zn₁ alloy composites reinforced with additive Mg₂Si particles prepared via the repeated plastic working (RPW) process were investigated. The RPW process was effective in refining Mg₂Si particles of 5 to 10 wt% and grains of the matrix via dynamic recrystallization. When increasing the repetition number of RPW process from 200 to 600 cycles, the particle size of Mg₂Si additives changed from 8μm to 1～2μm, and the grain size of the magnesium matrix was 1μm or less. With regard to the defensive and offensive behavior in wet wear test, this composite had superior adhesive wear resistance compared with the conventional magnesium alloys because of its high matrix hardness at elevated temperature. The uniform distribution of refined Mg₂Si particles was useful for improving both defensive and offensive properties against AZ31B counter disk specimens. Deep scratches of the disk surface were caused by coarse Mg₂Si additives, and resulted in an unstable and high friction coefficient.
citation_title	Wear Behavior of Sintered Magnesium Matrix Composites Reinforced with Mg2Si Particle under Wet Sliding Conditions
citation_author	Kondoh, Katsuyoshi
	Umeda, Junko
	Kawabata, Kenshi
	Seki, Yoshikazu
	Kawamura, Yoshihito
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2008-07
citation_journal_title	Transactions of JWRI
citation_volume	37
citation_issue	1
citation_firstpage	45
citation_lastpage	49
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/11498
citation_keywords	Magnesium Composite
	Mg₂Si Particle
	Repeated Plastic Working
	Adhesive
	Abrasive
	Friction Coefficient

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