Improvement in Tensile Property of Ti64 Composites with VGCFs Fabricated by Powder Metallurgy

Pripanapong, Patchara; Mimoto, Takanori; Li, Shu-feng; Imai, Hisashi; Umeda, Junko; Kondoh, Katsuyoshi

doi:https://doi.org/10.18910/26596

Improvement in Tensile Property of Ti64 Composites with VGCFs Fabricated by Powder Metallurgy

Pripanapong, Patchara; Mimoto, Takanori; Li, Shu-feng et al.

Transactions of JWRI, 2013, 42(1), 27-31

アクセス数:610件（2025-07-05 02:29 集計）

固定URL: https://doi.org/10.18910/26596

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タイトル	Improvement in Tensile Property of Ti64 Composites with VGCFs Fabricated by Powder Metallurgy
著者	著者名 Pripanapong, Patchara
	著者名 Mimoto, Takanori
	著者名 Li, Shu-feng
	NRID 1000030452379 1000030452379 著者名 Imai, Hisashi
	NRID 1000050345162 1000050345162 researchmap permalink umeda umeda Scopus Author ID 23478776500 23478776500 ORCID 0000-0001-8678-9708 0000-0001-8678-9708 著者名 Umeda, Junko
	NRID 1000050345138 1000050345138 researchmap permalink kondoh kondoh Scopus Author ID 9942942300 9942942300 著者名 Kondoh, Katsuyoshi
キーワード等	Ti64
	VGCFs
	Powder metallurgy
	Spark plasma sintering
	Solid solution strengthening
抄録	Ti-6Al-4V (Ti64) composite reinforced with vapor grown carbon fibers (VGCFs) was fabricated by a powder metallurgy (P/M) route in this research. Ti64 powder was mixed with VGCFs in four compositions such as 0.1, 0.2, 0.3 and 0.4 wt%, and consolidated by spark plasma sintering (SPS), followed by a hot extrusion process. The microstructure observation was carried out by optical microscopy (OM) and scanning electron microscopy (SEM). The microstructure was changed from full lamellar to bimodal after the addition of VGCFs. Almost all VGCFs reacting with Ti and turned into Ti6C3.75 compounds. Hardness was improved by the effect of solid solution strengthening of carbon in the Ti matrix and reached the maximum value of 495.8Hv. 0.2%YS and UTS were also significantly increased after adding 0.1wt% of VGCFs, but never much improved when more VGCF content was applied. Ductility of the sample was affected by a change in microstructure when 0.1 wt% of VGCFs was added, bimodal microstructures showed higher ductility compared to full lamellar structures. The relationship between fracture morphology after tensile testing and original microstructure could also be observed. At 0.1wt% of VGCFs, a good balance between strength and ductility of Ti64/VGCFs composite can be improved simultaneously.
出版者	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
収録物名	Transactions of JWRI
巻(号)	42(1)
ページ	27-31
刊行年月	2013-06
言語	英語
ハンドルURL	https://hdl.handle.net/11094/26596
DOI	https://doi.org/10.18910/26596
PISSN	03874508
NCID	AA00867058
アクセス権	open access
出版タイプ	Version of Record
カテゴリ	紀要論文 Departmental Bulletin Paper
カテゴリ	Transactions of JWRI / Vol.42 No.1 (2013-06)

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. 2013, 42(1), p. 27-31
DC.title	Improvement in Tensile Property of Ti64 Composites with VGCFs Fabricated by Powder Metallurgy
DC.creator	Pripanapong, Patchara
	Mimoto, Takanori
	Li, Shu-feng
	Imai, Hisashi
	Umeda, Junko
	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	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2013-06
DC.subject	Ti64
	VGCFs
	Powder metallurgy
	Spark plasma sintering
	Solid solution strengthening
DCTERMS.abstract	Ti-6Al-4V (Ti64) composite reinforced with vapor grown carbon fibers (VGCFs) was fabricated by a powder metallurgy (P/M) route in this research. Ti64 powder was mixed with VGCFs in four compositions such as 0.1, 0.2, 0.3 and 0.4 wt%, and consolidated by spark plasma sintering (SPS), followed by a hot extrusion process. The microstructure observation was carried out by optical microscopy (OM) and scanning electron microscopy (SEM). The microstructure was changed from full lamellar to bimodal after the addition of VGCFs. Almost all VGCFs reacting with Ti and turned into Ti6C3.75 compounds. Hardness was improved by the effect of solid solution strengthening of carbon in the Ti matrix and reached the maximum value of 495.8Hv. 0.2%YS and UTS were also significantly increased after adding 0.1wt% of VGCFs, but never much improved when more VGCF content was applied. Ductility of the sample was affected by a change in microstructure when 0.1 wt% of VGCFs was added, bimodal microstructures showed higher ductility compared to full lamellar structures. The relationship between fracture morphology after tensile testing and original microstructure could also be observed. At 0.1wt% of VGCFs, a good balance between strength and ductility of Ti64/VGCFs composite can be improved simultaneously.
DC.identifier	10.18910/26596
DC.format	26596
citation_title	Improvement in Tensile Property of Ti64 Composites with VGCFs Fabricated by Powder Metallurgy
citation_author	Pripanapong, Patchara
	Mimoto, Takanori
	Li, Shu-feng
	Imai, Hisashi
	Umeda, Junko
	Kondoh, Katsuyoshi
citation_publisher	大阪大学接合科学研究所
citation_language	英語
citation_date	2013-06
citation_journal_title	Transactions of JWRI
citation_volume	42
citation_issue	1
citation_firstpage	27
citation_lastpage	31
citation_public_url	https://hdl.handle.net/11094/26596
citation_doi_detail	10.18910/26596
citation_doi	https://doi.org/10.18910/26596

Improvement in Tensile Property of Ti64 Composites with VGCFs Fabricated by Powder Metallurgy

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