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jwri38_02_037
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論文情報
タイトル
Microstructural and Mechanical Properties of Ti Composite Reinforced with TiO₂ Additive Particles
著者
Yoshimura, Tomohiro
Yoshimura, Tomohiro
Thotsaphon, Threrujirapapong
Thotsaphon, Threrujirapapong
Imai, Hisashi
Imai, Hisashi
Kondoh, Katsuyoshi
Kondoh, Katsuyoshi
キーワード等
Titanium
Oxide dispersion strengthening
Spark plasma sintering
Hot extrusion
抄録
Titanium (Ti) alloys can be applied to various products in aircraft, automotive and motor cycles industries because of their weight reduction effects, superior mechanical responses and high corrosion resistance. Ti-6Al-4V (Ti64) is one of the most common Ti alloys used in structural components. It shows a high tensile strength of 900MPa or more. On the other hand, the poor elongation of about 10% is one of the disadvantages of Ti64 alloys. In addition, high cost additional elements such as vanadium and difficult melting processes increase the total material cost of Ti64. That is why its applications are limited to high-performance products. In this study, a highly strengthened pure titanium has been developed using high-purity titanium powder (HP-Ti) by elemental mixing with titanium oxide (TiO₂) powder and avoiding the melting process. The main strengthening mechanism of this material is the oxide dispersion strengthening (ODS) by elementally mixed TiO₂ in fine dispersoids. Elementally mixed powder of HP-Ti and TiO₂ was consolidated by the spark plasma sintering (SPS) process. To improve the ductility of sintered material, hot extrusion was applied to sintered HP-Ti. For example, the extruded HP-Ti mixed with 0.8wt% of TiO₂ particles indicated a high tensile strength of 863MPa and good elongation of 26.7%.
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
2
開始ページ
37
終了ページ
41
刊行年月
2009-12
ISSN
03874508
NCID
AA00867058
URL
http://hdl.handle.net/11094/6987
言語
英語
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.38 No.2 (2009-12)
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text
DCTERMS.bibliographicCitation
Transactions of JWRI.38(2) P.37-P.41
DC.title
Microstructural and Mechanical Properties of Ti Composite Reinforced with TiO₂ Additive Particles
DC.creator
Yoshimura, Tomohiro
Thotsaphon, Threrujirapapong
Imai, Hisashi
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
2009-12
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/6987
DC.subject
Titanium
Oxide dispersion strengthening
Spark plasma sintering
Hot extrusion
DCTERMS.abstract
Titanium (Ti) alloys can be applied to various products in aircraft, automotive and motor cycles industries because of their weight reduction effects, superior mechanical responses and high corrosion resistance. Ti-6Al-4V (Ti64) is one of the most common Ti alloys used in structural components. It shows a high tensile strength of 900MPa or more. On the other hand, the poor elongation of about 10% is one of the disadvantages of Ti64 alloys. In addition, high cost additional elements such as vanadium and difficult melting processes increase the total material cost of Ti64. That is why its applications are limited to high-performance products. In this study, a highly strengthened pure titanium has been developed using high-purity titanium powder (HP-Ti) by elemental mixing with titanium oxide (TiO₂) powder and avoiding the melting process. The main strengthening mechanism of this material is the oxide dispersion strengthening (ODS) by elementally mixed TiO₂ in fine dispersoids. Elementally mixed powder of HP-Ti and TiO₂ was consolidated by the spark plasma sintering (SPS) process. To improve the ductility of sintered material, hot extrusion was applied to sintered HP-Ti. For example, the extruded HP-Ti mixed with 0.8wt% of TiO₂ particles indicated a high tensile strength of 863MPa and good elongation of 26.7%.
citation_title
Microstructural and Mechanical Properties of Ti Composite Reinforced with TiO₂ Additive Particles
citation_author
Yoshimura, Tomohiro
Thotsaphon, Threrujirapapong
Imai, Hisashi
Kondoh, Katsuyoshi
citation_publisher
大阪大学接合科学研究所
citation_language
英語
citation_date
2009-12
citation_journal_title
Transactions of JWRI
citation_volume
38
citation_issue
2
citation_firstpage
37
citation_lastpage
41
citation_issn
03874508
citation_public_url
http://hdl.handle.net/11094/6987
citation_keywords
Titanium
Oxide dispersion strengthening
Spark plasma sintering
Hot extrusion