Fabrication of Ti-Alloy powder/solid composite with uniaxial anisotropy by introducing unidirectional honeycomb structure via electron beam powder bed fusion

Ikeo, Naoko; Matsumi, Tatsuya; Ishimoto, Takuya; Ozasa, Ryosuke; Matsugaki, Aira; Matsuzaka, Tadaaki; Gokcekaya, Ozkan; Takigawa, Yorinobu; Nakano, Takayoshi

doi:https://doi.org/10.3390/cryst11091074

Fabrication of Ti-Alloy powder/solid composite with uniaxial anisotropy by introducing unidirectional honeycomb structure via electron beam powder bed fusion

Ikeo, Naoko; Matsumi, Tatsuya; Ishimoto, Takuya et al.

Crystals, 2021, 11(9), 1074

Number of Access:568（2025-07-18 10:00 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89771

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Title	Fabrication of Ti-Alloy powder/solid composite with uniaxial anisotropy by introducing unidirectional honeycomb structure via electron beam powder bed fusion
Creator	CreatorName Ikeo, Naoko
	CreatorName Matsumi, Tatsuya
	NRID 1000050508835 1000050508835 ORCID 0000-0003-0081-0591 0000-0003-0081-0591 researchmap permalink i_taku i_taku Scopus Author ID 35310484700 35310484700 CreatorName Ishimoto, Takuya
	NRID 1000080845347 1000080845347 ORCID 0000-0002-2773-072X 0000-0002-2773-072X researchmap permalink ozasa_r ozasa_r Scopus Author ID 56202812400 56202812400 CreatorName Ozasa, Ryosuke
	NRID 1000010592529 1000010592529 ORCID 0000-0002-8427-7124 0000-0002-8427-7124 researchmap permalink aira aira Scopus Author ID 24172720900 24172720900 CreatorName Matsugaki, Aira
	CreatorName Matsuzaka, Tadaaki
	CreatorName Gokcekaya, Ozkan
	CreatorName Takigawa, Yorinobu
	NRID 1000030243182 1000030243182 ORCID 0000-0001-8052-1698 0000-0001-8052-1698 researchmap permalink read0013987 read0013987 Scopus Author ID 7403896013 7403896013 CreatorName Nakano, Takayoshi
Subject	Energy absorption
	Hierarchical composite
	Mechanical properties
	Metal additive manufacturing
	Ti–6Al–4V
Description	Ikeo N., Matsumi T., Ishimoto T., et al. Fabrication of Ti-Alloy powder/solid composite with uniaxial anisotropy by introducing unidirectional honeycomb structure via electron beam powder bed fusion. Crystals, 11, 9, 1074. https://doi.org/10.3390/cryst11091074.
Abstract	In this study, a Ti–6Al–4V alloy composite with uniaxial anisotropy and a hierarchical structure is fabricated using electron beam powder bed fusion, one of the additive manufacturing techniques that enable arbitrary fabrication, and subsequent heat treatment. The uniaxial anisotropic deformation behavior and mechanical properties such as Young’s modulus are obtained by introducing a unidirectional honeycomb structure. The main feature of this structure is that the unmelted powder retained in the pores of the honeycomb structure. After appropriate heat treatment at 1020◦C, necks are formed between the powder particles and between the powder particles and the honeycomb wall, enabling a stress transmission through the necks when the composite is loaded. This means that the powder part has been mechanically functionalized by the neck formation. As a result, a plateau region appears in the stress–strain curve. The stress transfer among the powder particles leads to the cooperative deformation of the composites, contributing to the excellent energy absorption capacity. Therefore, it is expected that the composite can be applied to bone plates on uniaxially oriented microstructures such as long bones owing to its excellent energy absorption capacity and low elasticity to unidirectionally suppress stress shielding.
Publisher	MDPI
Source Title	Crystals
Volume (Issue)	11(9)
Page	1074
Date of Issued	2021-09-05
Language	English
Handle URL	https://hdl.handle.net/11094/89771
eISSN	20734352
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.3390/cryst11091074
Access Rights	open access
CopyRight	This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Crystals. 2021, 11(9), p. 1074
DC.title	Fabrication of Ti-Alloy powder/solid composite with uniaxial anisotropy by introducing unidirectional honeycomb structure via electron beam powder bed fusion
DC.creator	Ikeo, Naoko
	Matsumi, Tatsuya
	Ishimoto, Takuya
	Ozasa, Ryosuke
	Matsugaki, Aira
	Matsuzaka, Tadaaki
	Gokcekaya, Ozkan
	Takigawa, Yorinobu
	Nakano, Takayoshi
DC.publisher	MDPI
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2021-09-05
DC.identifier	https://doi.org/10.3390/cryst11091074
DC.subject	Energy absorption
	Hierarchical composite
	Mechanical properties
	Metal additive manufacturing
	Ti–6Al–4V
DC.description	Ikeo N., Matsumi T., Ishimoto T., et al. Fabrication of Ti-Alloy powder/solid composite with uniaxial anisotropy by introducing unidirectional honeycomb structure via electron beam powder bed fusion. Crystals, 11, 9, 1074. https://doi.org/10.3390/cryst11091074.
DCTERMS.abstract	In this study, a Ti–6Al–4V alloy composite with uniaxial anisotropy and a hierarchical structure is fabricated using electron beam powder bed fusion, one of the additive manufacturing techniques that enable arbitrary fabrication, and subsequent heat treatment. The uniaxial anisotropic deformation behavior and mechanical properties such as Young’s modulus are obtained by introducing a unidirectional honeycomb structure. The main feature of this structure is that the unmelted powder retained in the pores of the honeycomb structure. After appropriate heat treatment at 1020◦C, necks are formed between the powder particles and between the powder particles and the honeycomb wall, enabling a stress transmission through the necks when the composite is loaded. This means that the powder part has been mechanically functionalized by the neck formation. As a result, a plateau region appears in the stress–strain curve. The stress transfer among the powder particles leads to the cooperative deformation of the composites, contributing to the excellent energy absorption capacity. Therefore, it is expected that the composite can be applied to bone plates on uniaxially oriented microstructures such as long bones owing to its excellent energy absorption capacity and low elasticity to unidirectionally suppress stress shielding.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	89771
citation_title	Fabrication of Ti-Alloy powder/solid composite with uniaxial anisotropy by introducing unidirectional honeycomb structure via electron beam powder bed fusion
citation_author	Ikeo, Naoko
	Matsumi, Tatsuya
	Ishimoto, Takuya
	Ozasa, Ryosuke
	Matsugaki, Aira
	Matsuzaka, Tadaaki
	Gokcekaya, Ozkan
	Takigawa, Yorinobu
	Nakano, Takayoshi
citation_publisher	MDPI
citation_language	English
citation_date	2021-09-05
citation_journal_title	Crystals
citation_volume	11
citation_issue	9
citation_firstpage	1074
citation_doi	https://doi.org/10.3390/cryst11091074
citation_public_url	https://hdl.handle.net/11094/89771

Fabrication of Ti-Alloy powder/solid composite with uniaxial anisotropy by introducing unidirectional honeycomb structure via electron beam powder bed fusion

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