Solid-state Reaction of CaO Particles Dispersed in Powder Metallurgy Magnesium Composites

Fujita, Junji; Enami, Keitaro; Ohara, Masaki; Igarashi, Takanori; Kondoh, Katsuyoshi

doi:https://doi.org/10.18910/10279

Solid-state Reaction of CaO Particles Dispersed in Powder Metallurgy Magnesium Composites

Fujita, Junji; Enami, Keitaro; Ohara, Masaki et al.

Transactions of JWRI, 2009, 38(1), 31-35

Number of Access:538（2025-10-05 09:44 Counts）

Identifier to cite or link to this item: https://doi.org/10.18910/10279

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Title	Solid-state Reaction of CaO Particles Dispersed in Powder Metallurgy Magnesium Composites
Creator	CreatorName Fujita, Junji
	CreatorName Enami, Keitaro
	CreatorName Ohara, Masaki
	CreatorName Igarashi, Takanori
	NRID 1000050345138 1000050345138 researchmap permalink kondoh kondoh Scopus Author ID 9942942300 9942942300 CreatorName Kondoh, Katsuyoshi
Subject	Magnesium alloy
	Calcium oxide
	Bulk mechanical alloying
	AZ61B
Abstract	Powder metallurgy magnesium composites reinforced with calcium oxides (CaO) were fabricated by using an equal channel angular bulk mechanical alloying process (ECABMA), using AZ series alloys (AZ31B, AZ61B, AZ91D) as the matrix material. In-situ formed compounds were investigated by XRD, DTA and SEM/EDS analysis. In the case of AZ61B added with CaO particles, the fabrication of Al₂2Ca and MgO occurred by reducing CaO during annealing the composite. Annealing treatment for longer time or at higher temperature is necessary for the reaction in the specimens with lower CaO content. For example, with 2.5 vol.% CaO added AZ61B, the Al₂Ca phase was synthesized by annealing at 550℃ for 1 hour or at 450℃ for 24 hours. Both kinds of Al atoms which exist in solid solution in α-Mg matrix at room temperature and which generated from the decomposition of Mg₁₇Al₁₂ phase (βphase) form Al₂Ca phase during annealing at elevated temperature.
Publisher	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
Source Title	Transactions of JWRI
Volume (Issue)	38(1)
Page	31-35
Date of Issued	2009-09
Language	English
Handle URL	https://hdl.handle.net/11094/10279
DOI	https://doi.org/10.18910/10279
PISSN	03874508
NCID	AA00867058
Access Rights	open access
oaire:version	Version of Record
Category	紀要論文 Departmental Bulletin Paper
Category	Transactions of JWRI / Vol.38 No.1 (2009-09)

Resource Type	departmental bulletin paper
Local Type	Departmental Bulletin Paper
DCMI Type	Text
DCTERMS.bibliographicCitation	Transactions of JWRI. 2009, 38(1), p. 31-35
DC.title	Solid-state Reaction of CaO Particles Dispersed in Powder Metallurgy Magnesium Composites
DC.creator	Fujita, Junji
	Enami, Keitaro
	Ohara, Masaki
	Igarashi, Takanori
	Kondoh, Katsuyoshi
DC.publisher	大阪大学接合科学研究所
	オオサカダイガクセツゴウカガクケンキュウジョ
	Joining and Welding Research Institute, Osaka University
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2009-09
DC.subject	Magnesium alloy
	Calcium oxide
	Bulk mechanical alloying
	AZ61B
DCTERMS.abstract	Powder metallurgy magnesium composites reinforced with calcium oxides (CaO) were fabricated by using an equal channel angular bulk mechanical alloying process (ECABMA), using AZ series alloys (AZ31B, AZ61B, AZ91D) as the matrix material. In-situ formed compounds were investigated by XRD, DTA and SEM/EDS analysis. In the case of AZ61B added with CaO particles, the fabrication of Al₂2Ca and MgO occurred by reducing CaO during annealing the composite. Annealing treatment for longer time or at higher temperature is necessary for the reaction in the specimens with lower CaO content. For example, with 2.5 vol.% CaO added AZ61B, the Al₂Ca phase was synthesized by annealing at 550℃ for 1 hour or at 450℃ for 24 hours. Both kinds of Al atoms which exist in solid solution in α-Mg matrix at room temperature and which generated from the decomposition of Mg₁₇Al₁₂ phase (βphase) form Al₂Ca phase during annealing at elevated temperature.
DC.identifier	10.18910/10279
DC.format	10279
citation_title	Solid-state Reaction of CaO Particles Dispersed in Powder Metallurgy Magnesium Composites
citation_author	Fujita, Junji
	Enami, Keitaro
	Ohara, Masaki
	Igarashi, Takanori
	Kondoh, Katsuyoshi
citation_publisher	大阪大学接合科学研究所
citation_language	English
citation_date	2009-09
citation_journal_title	Transactions of JWRI
citation_volume	38
citation_issue	1
citation_firstpage	31
citation_lastpage	35
citation_public_url	https://hdl.handle.net/11094/10279
citation_doi_detail	10.18910/10279
citation_doi	https://doi.org/10.18910/10279

Solid-state Reaction of CaO Particles Dispersed in Powder Metallurgy Magnesium Composites

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