Development of TiNbTaZrMo bio-high entropy alloy (BioHEA) super-solid solution by selective laser melting, and its improved mechanical property and biocompatibility

Ishimoto, Takuya; Ozasa, Ryosuke; Nakano, Kana; Weinmann, Markus; Schnitter, Christoph; Stenzel, Melanie; Matsugaki, Aira; Nagase, Takeshi; Matsuzaka, Tadaaki; Todai, Mitsuharu; Kim, Hyoung Seop; Nakano, Takayoshi

doi:https://doi.org/10.1016/j.scriptamat.2020.113658

Development of TiNbTaZrMo bio-high entropy alloy (BioHEA) super-solid solution by selective laser melting, and its improved mechanical property and biocompatibility

Ishimoto, Takuya; Ozasa, Ryosuke; Nakano, Kana et al.

Scripta Materialia, 2021, 194, 113658

Number of Access:611（2025-10-31 16:06 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89789

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Title	Development of TiNbTaZrMo bio-high entropy alloy (BioHEA) super-solid solution by selective laser melting, and its improved mechanical property and biocompatibility
Creator	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
	CreatorName Nakano, Kana
	CreatorName Weinmann, Markus
	CreatorName Schnitter, Christoph
	CreatorName Stenzel, Melanie
	NRID 1000010592529 1000010592529 ORCID 0000-0002-8427-7124 0000-0002-8427-7124 researchmap permalink aira aira Scopus Author ID 24172720900 24172720900 CreatorName Matsugaki, Aira
	NRID 1000050362661 1000050362661 CreatorName Nagase, Takeshi
	CreatorName Matsuzaka, Tadaaki
	NRID 1000010610800 1000010610800 CreatorName Todai, Mitsuharu
	CreatorName Kim, Hyoung Seop
	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	BioHEA
	Cooling rate
	High entropy alloy
	Segregation suppression
	Selective laser melting
Description	Ishimoto T., Ozasa R., Nakano K., et al. Development of TiNbTaZrMo bio-high entropy alloy (BioHEA) super-solid solution by selective laser melting, and its improved mechanical property and biocompatibility. Scripta Materialia, 194, 113658. https://doi.org/10.1016/j.scriptamat.2020.113658.
Abstract	BioHEAs, specifically designed high entropy alloy (HEA) systems for biomedical applications, represent a new era for biometals. However, recent challenges are (1) the poor shape customizability, and (2) the inevitable severe segregation due to the intrinsic fact that HEA is an ultra-multicomponent alloy system. To achieve shape customization and suppression of elemental segregation simultaneously, we used an extremely high cooling rate (~107 K/s) of the selective laser melting (SLM) process. We, for the first time, developed pre-alloyed Ti1.4Nb0.6Ta0.6Zr1.4Mo0.6 BioHEA powders and SLM-built parts with low porosity, customizable shape, excellent yield stress, and good biocompatibility. The SLM-built specimens showed drastically suppressed elemental segregation compared to the cast counterpart, representing realization of a super-solid solution. As a result, the 0.2% proof stress reached 1690 ± 78 MPa, which is significantly higher than that of cast Ti1.4Nb0.6Ta0.6Zr1.4Mo0.6 (1140 MPa). The SLM-built Ti1.4Nb0.6Ta0.6Zr1.4Mo0.6 BioHEA is promising as a next-generation metallic material for biomedical applications.
Publisher	Acta Materialia Inc.
Source Title	Scripta Materialia
Volume (Issue)	194
Page	113658
Date of Issued	2021-03-15
Language	English
Handle URL	https://hdl.handle.net/11094/89789
PISSN	13596462
NCID	AA11067905
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1016/j.scriptamat.2020.113658
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	Scripta Materialia. 2021, 194, p. 113658
DC.title	Development of TiNbTaZrMo bio-high entropy alloy (BioHEA) super-solid solution by selective laser melting, and its improved mechanical property and biocompatibility
DC.creator	Ishimoto, Takuya
	Ozasa, Ryosuke
	Nakano, Kana
	Weinmann, Markus
	Schnitter, Christoph
	Stenzel, Melanie
	Matsugaki, Aira
	Nagase, Takeshi
	Matsuzaka, Tadaaki
	Todai, Mitsuharu
	Kim, Hyoung Seop
	Nakano, Takayoshi
DC.publisher	Acta Materialia Inc.
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2021-03-15
DC.identifier	https://doi.org/10.1016/j.scriptamat.2020.113658
DC.subject	BioHEA
	Cooling rate
	High entropy alloy
	Segregation suppression
	Selective laser melting
DC.description	Ishimoto T., Ozasa R., Nakano K., et al. Development of TiNbTaZrMo bio-high entropy alloy (BioHEA) super-solid solution by selective laser melting, and its improved mechanical property and biocompatibility. Scripta Materialia, 194, 113658. https://doi.org/10.1016/j.scriptamat.2020.113658.
DCTERMS.abstract	BioHEAs, specifically designed high entropy alloy (HEA) systems for biomedical applications, represent a new era for biometals. However, recent challenges are (1) the poor shape customizability, and (2) the inevitable severe segregation due to the intrinsic fact that HEA is an ultra-multicomponent alloy system. To achieve shape customization and suppression of elemental segregation simultaneously, we used an extremely high cooling rate (~107 K/s) of the selective laser melting (SLM) process. We, for the first time, developed pre-alloyed Ti1.4Nb0.6Ta0.6Zr1.4Mo0.6 BioHEA powders and SLM-built parts with low porosity, customizable shape, excellent yield stress, and good biocompatibility. The SLM-built specimens showed drastically suppressed elemental segregation compared to the cast counterpart, representing realization of a super-solid solution. As a result, the 0.2% proof stress reached 1690 ± 78 MPa, which is significantly higher than that of cast Ti1.4Nb0.6Ta0.6Zr1.4Mo0.6 (1140 MPa). The SLM-built Ti1.4Nb0.6Ta0.6Zr1.4Mo0.6 BioHEA is promising as a next-generation metallic material for biomedical applications.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	89789
citation_title	Development of TiNbTaZrMo bio-high entropy alloy (BioHEA) super-solid solution by selective laser melting, and its improved mechanical property and biocompatibility
citation_author	Ishimoto, Takuya
	Ozasa, Ryosuke
	Nakano, Kana
	Weinmann, Markus
	Schnitter, Christoph
	Stenzel, Melanie
	Matsugaki, Aira
	Nagase, Takeshi
	Matsuzaka, Tadaaki
	Todai, Mitsuharu
	Kim, Hyoung Seop
	Nakano, Takayoshi
citation_publisher	Acta Materialia Inc.
citation_language	English
citation_date	2021-03-15
citation_journal_title	Scripta Materialia
citation_volume	194
citation_firstpage	113658
citation_doi	https://doi.org/10.1016/j.scriptamat.2020.113658
citation_public_url	https://hdl.handle.net/11094/89789

Development of TiNbTaZrMo bio-high entropy alloy (BioHEA) super-solid solution by selective laser melting, and its improved mechanical property and biocompatibility

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