Analysis of Warm Compaction Behavior of Iron Powder Particles via Cooper-Eaton Equation

Kondoh, Katsuyoshi; Watanabe, Ryuzo

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タイトル	Analysis of Warm Compaction Behavior of Iron Powder Particles via Cooper-Eaton Equation
著者	Kondoh, Katsuyoshi Kondoh, Katsuyoshi
著者	Watanabe, Ryuzo Watanabe, Ryuzo
キーワード等	Warm compaction behavior
	Cooper-Eaton equation
	Lubricant
	Melting point
	Friction force
	Particle rearrangement
	Plastic deformation
抄録	The effect of lubricant particles premixed with iron alloy powder on warm compaction behavior was investigated by using the Cooper-Eaton equation based on a probabilistic approach. In particular, the melting point of the lubricant was examined. Particle rearrangement significantly progresses during warm compaction when the powder temperature is lower than the lubricant melting point. On the other hand, it is hindered when the lubricant is in a liquid state at the elevated temperature. This is due to the strong dependence of the particle rearrangement on the lubrication effect between iron particles, and the formability of the solid lubricant film is poor when the temperature is beyond its melting point. The plastic deformation of iron alloy powder shows little effectiveness on the warm compaction behavior because of the small change in its compaction proof-strength at applied temperatures below 473K. The calculated total fractional volume compaction corresponds to the measured green density. This analytical method is available for quantitatively evaluating the warm compaction behavior in the powder metallurgy (PM) process.
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	2
開始ページ	47
終了ページ	51
刊行年月	2006-12
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/12672
言語	英語
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.35 No.2 (2006-12)

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(2) P.47-P.51
DC.title	Analysis of Warm Compaction Behavior of Iron Powder Particles via Cooper-Eaton Equation
DC.creator	Kondoh, Katsuyoshi
DC.creator	Watanabe, Ryuzo
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	2006-12
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/12672
DC.subject	Warm compaction behavior
	Cooper-Eaton equation
	Lubricant
	Melting point
	Friction force
	Particle rearrangement
	Plastic deformation
DCTERMS.abstract	The effect of lubricant particles premixed with iron alloy powder on warm compaction behavior was investigated by using the Cooper-Eaton equation based on a probabilistic approach. In particular, the melting point of the lubricant was examined. Particle rearrangement significantly progresses during warm compaction when the powder temperature is lower than the lubricant melting point. On the other hand, it is hindered when the lubricant is in a liquid state at the elevated temperature. This is due to the strong dependence of the particle rearrangement on the lubrication effect between iron particles, and the formability of the solid lubricant film is poor when the temperature is beyond its melting point. The plastic deformation of iron alloy powder shows little effectiveness on the warm compaction behavior because of the small change in its compaction proof-strength at applied temperatures below 473K. The calculated total fractional volume compaction corresponds to the measured green density. This analytical method is available for quantitatively evaluating the warm compaction behavior in the powder metallurgy (PM) process.
citation_title	Analysis of Warm Compaction Behavior of Iron Powder Particles via Cooper-Eaton Equation
citation_author	Kondoh, Katsuyoshi
citation_author	Watanabe, Ryuzo
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2006-12
citation_journal_title	Transactions of JWRI
citation_volume	35
citation_issue	2
citation_firstpage	47
citation_lastpage	51
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/12672
citation_keywords	Warm compaction behavior
	Cooper-Eaton equation
	Lubricant
	Melting point
	Friction force
	Particle rearrangement
	Plastic deformation

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