Mechanical Properties and Machinability of Extruded Cu-40%Zn Brass Alloys with Bismuth via Powder Metallurgy Process

Imai, Hisashi; Li, shufeng; Atsumi, Haruhiko; Kosaka, Yoshiharu; Kojima, Akimichi; Umeda, Junko; Kondoh, Katsuyoshi

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タイトル	Mechanical Properties and Machinability of Extruded Cu-40%Zn Brass Alloys with Bismuth via Powder Metallurgy Process
著者	Imai, Hisashi Imai, Hisashi
	Li, shufeng Li, shufeng
	Atsumi, Haruhiko Atsumi, Haruhiko
	Kosaka, Yoshiharu Kosaka, Yoshiharu
	Kojima, Akimichi Kojima, Akimichi
	Umeda, Junko Umeda, Junko
	Kondoh, Katsuyoshi Kondoh, Katsuyoshi
キーワード等	Cu-41Zn Brass
	Lead-free
	Bismuth
	Machinability
	Machining chip
抄録	In this paper, the uniform distribution process of bismuth particles in Cu-40Zn brass alloy by powder metallurgy (P/M) and machinable lead-free P/M brass with bismuth are described. Cu-40Zn Brass with bismuth powders produced by the rapid solidification processing were used as raw materials, having mean particle sizes of 150 μm. Three kinds of billets were prepared for the extrusion, namely green compact, sintered billets by using spark plasma sintering (SPS) and cast ingot. Bismuth dispersed in brass powder formed grains and dissolved into the powder surface by the heat treatment at the temperature over the melting point of bismuth. The behavior of bismuth existing in the primary particle boundary caused a decrease in the elongation of the extruded brass. Drill cutting ability was improved for the extruded material with the continuous machining chip. The shape of the machining chip was affected by the combination of brass matrix and the distribution of bismuth.
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	38
号	1
開始ページ	25
終了ページ	30
刊行年月	2009-09
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/5502
言語	英語
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.38 No.1 (2009-09)

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.38(1) P.25-P.30
DC.title	Mechanical Properties and Machinability of Extruded Cu-40%Zn Brass Alloys with Bismuth via Powder Metallurgy Process
DC.creator	Imai, Hisashi
	Li, shufeng
	Atsumi, Haruhiko
	Kosaka, Yoshiharu
	Kojima, Akimichi
	Umeda, Junko
	Kondoh, Katsuyoshi
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	2009-09
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/5502
DC.subject	Cu-41Zn Brass
	Lead-free
	Bismuth
	Machinability
	Machining chip
DCTERMS.abstract	In this paper, the uniform distribution process of bismuth particles in Cu-40Zn brass alloy by powder metallurgy (P/M) and machinable lead-free P/M brass with bismuth are described. Cu-40Zn Brass with bismuth powders produced by the rapid solidification processing were used as raw materials, having mean particle sizes of 150 μm. Three kinds of billets were prepared for the extrusion, namely green compact, sintered billets by using spark plasma sintering (SPS) and cast ingot. Bismuth dispersed in brass powder formed grains and dissolved into the powder surface by the heat treatment at the temperature over the melting point of bismuth. The behavior of bismuth existing in the primary particle boundary caused a decrease in the elongation of the extruded brass. Drill cutting ability was improved for the extruded material with the continuous machining chip. The shape of the machining chip was affected by the combination of brass matrix and the distribution of bismuth.
citation_title	Mechanical Properties and Machinability of Extruded Cu-40%Zn Brass Alloys with Bismuth via Powder Metallurgy Process
citation_author	Imai, Hisashi
	Li, shufeng
	Atsumi, Haruhiko
	Kosaka, Yoshiharu
	Kojima, Akimichi
	Umeda, Junko
	Kondoh, Katsuyoshi
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2009-09
citation_journal_title	Transactions of JWRI
citation_volume	38
citation_issue	1
citation_firstpage	25
citation_lastpage	30
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/5502
citation_keywords	Cu-41Zn Brass
	Lead-free
	Bismuth
	Machinability
	Machining chip

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