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論文情報
タイトル
Solid-state Reaction of CaO Particles Dispersed in Powder Metallurgy Magnesium Composites
著者
Fujita, Junji
Fujita, Junji
Enami, Keitaro
Enami, Keitaro
Ohara, Masaki
Ohara, Masaki
Igarashi, Takanori
Igarashi, Takanori
Kondoh, Katsuyoshi
Kondoh, Katsuyoshi
キーワード等
Magnesium alloy
Calcium oxide
Bulk mechanical alloying
AZ61B
抄録
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.
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
31
終了ページ
35
刊行年月
2009-09
ISSN
03874508
NCID
AA00867058
URL
http://hdl.handle.net/11094/10279
言語
英語
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.38 No.1 (2009-09)
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著者版フラグ
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text
DCTERMS.bibliographicCitation
Transactions of JWRI.38(1) P.31-P.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
DC.language" scheme="DCTERMS.RFC1766
英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF
2009-09
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/10279
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.
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
英語
citation_date
2009-09
citation_journal_title
Transactions of JWRI
citation_volume
38
citation_issue
1
citation_firstpage
31
citation_lastpage
35
citation_issn
03874508
citation_public_url
http://hdl.handle.net/11094/10279
citation_keywords
Magnesium alloy
Calcium oxide
Bulk mechanical alloying
AZ61B