Mechanical Characteristics of Hot Extruded Non-Combustible Magnesium Alloy using Water Atomized Powder

Elsayed, Ayman; Kondoh, Katsuyoshi; Imai, Hisashi; Umeda, Junko; Kawakami, Masashi

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タイトル	Mechanical Characteristics of Hot Extruded Non-Combustible Magnesium Alloy using Water Atomized Powder
著者	Elsayed, Ayman Elsayed, Ayman
	Kondoh, Katsuyoshi Kondoh, Katsuyoshi
	Imai, Hisashi Imai, Hisashi
	Umeda, Junko Umeda, Junko
	Kawakami, Masashi Kawakami, Masashi
著者 (ヨミ)	コンドウ, カツヨシ
	イマイ, ヒサシ
	ウメダ, ジュンコ
キーワード等	Rapidly solidification
	Magnesium alloy powder
	Al₂Ca
	Hot extrusion
	Water atomization
抄録	SWAP (Spinning Water Atomization Process), is one of the rapid solidification processes which promises to produce coarse non-combustible magnesium alloy powder with 1~4mm length, having fine α-Mg grains and Al₂Ca intermetallic compounds. AMX602 (Mg-6%Al-0.5%Mn-2%Ca) powders were compacted at room temperature. Their green compacts with a relative density of about 85% were heated at 573-673 K for 300s in Ar gas atmosphere, and immediately consolidated by hot extrusion. Microstructure observation and evaluation of mechanical properties of the extruded AMX602 alloys were carried out. The uniform and fine microstructures with grains less than 0.45~0.8 μm from dynamic recrystallization during hot extrusion were observed, and were much smaller compared to the extruded AMX602 alloy fabricated by using cast ingots. The extremely fine intermetallic compounds 200~500 nm diameter were uniformly distributed in the matrix of powder metallurgy (P/M) extruded alloys. These microstructures produced excellent mechanical properties in the wrought alloys. For example, in the case of AMX602 alloys extruded at 573K, the tensile strength (TS) of 447 MPa, yield stress (YS) of 425 MPa and 9.6% elongation were obtained.
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	2
開始ページ	43
終了ページ	49
刊行年月	2008-12
ISSN	03874508
NCID	AA00867058
URL	http://hdl.handle.net/11094/4489
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.2 (2008-12)

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.37(2) P.43-P.49
DC.title	Mechanical Characteristics of Hot Extruded Non-Combustible Magnesium Alloy using Water Atomized Powder
DC.creator	Elsayed, Ayman
	Kondoh, Katsuyoshi
	Imai, Hisashi
	Umeda, Junko
	Kawakami, Masashi
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	2008-12
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/4489
DC.subject	Rapidly solidification
	Magnesium alloy powder
	Al₂Ca
	Hot extrusion
	Water atomization
DCTERMS.abstract	SWAP (Spinning Water Atomization Process), is one of the rapid solidification processes which promises to produce coarse non-combustible magnesium alloy powder with 1~4mm length, having fine α-Mg grains and Al₂Ca intermetallic compounds. AMX602 (Mg-6%Al-0.5%Mn-2%Ca) powders were compacted at room temperature. Their green compacts with a relative density of about 85% were heated at 573-673 K for 300s in Ar gas atmosphere, and immediately consolidated by hot extrusion. Microstructure observation and evaluation of mechanical properties of the extruded AMX602 alloys were carried out. The uniform and fine microstructures with grains less than 0.45~0.8 μm from dynamic recrystallization during hot extrusion were observed, and were much smaller compared to the extruded AMX602 alloy fabricated by using cast ingots. The extremely fine intermetallic compounds 200~500 nm diameter were uniformly distributed in the matrix of powder metallurgy (P/M) extruded alloys. These microstructures produced excellent mechanical properties in the wrought alloys. For example, in the case of AMX602 alloys extruded at 573K, the tensile strength (TS) of 447 MPa, yield stress (YS) of 425 MPa and 9.6% elongation were obtained.
citation_title	Mechanical Characteristics of Hot Extruded Non-Combustible Magnesium Alloy using Water Atomized Powder
citation_author	Elsayed, Ayman
	Kondoh, Katsuyoshi
	Imai, Hisashi
	Umeda, Junko
	Kawakami, Masashi
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2008-12
citation_journal_title	Transactions of JWRI
citation_volume	37
citation_issue	2
citation_firstpage	43
citation_lastpage	49
citation_issn	03874508
citation_public_url	http://hdl.handle.net/11094/4489
citation_keywords	Rapidly solidification
	Magnesium alloy powder
	Al₂Ca
	Hot extrusion
	Water atomization

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