Development of an equiatomic octonary TiNbTaZrMoHfWCr super-high-entropy alloy for biomedical applications

Matsuzaka, Tadaaki; Hyakubu, Akira; Kim, Yong Seong et al.

Materials Chemistry and Physics, 2024, 316, 129120

Number of Access:355（2025-07-18 09:49 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/94897

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Title
Development of an equiatomic octonary TiNbTaZrMoHfWCr super-high-entropy alloy for biomedical applications
Creator
CreatorName
Matsuzaka, Tadaaki
CreatorName
Hyakubu, Akira
CreatorName
Kim, Yong Seong
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
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
Kim, Hyoung Seop
CreatorName
Mizuguchi, Tomoji
NRID
1000050988160 1000050988160
CreatorName
Gokcekaya, Ozkan
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
BioSHEAs
Octonary system
Solid-solution strengthening
Super-high-entropy alloys (SHEAs)
Supermulticomponent
Description
Matsuzaka T., Hyakubu A., Kim Y.S., et al. Development of an equiatomic octonary TiNbTaZrMoHfWCr super-high-entropy alloy for biomedical applications. Materials Chemistry and Physics 316, 129120 (2024); https://doi.org/10.1016/j.matchemphys.2024.129120.
Abstract
A super-high-entropy alloy (SHEA) with ΔSmix ≥ 2.0R (where R is the gas constant) was designed to produce metallic materials with superior mechanical properties to conventional alloys. As an alternative to conventional quinary high-entropy alloys (HEAs), herein, octonary SHEAs for biomedical applications (BioSHEAs) are proposed for the first time, and the TiNbTaZrMoHfWCr BioSHEA was fabricated. Arc-melted BioSHEA exhibited an extremely high yield strength of 1953 ± 84 MPa, which was approximately 550 MPa higher than that of the quinary TiNbTaZrMo BioHEA. This yield strength is considerably higher than that estimated by the rule of mixtures for pure metals, confirming the achievement of significant solid-solution strengthening induced by a supermulticomponent solid solution composed of elements with different atomic radii. Its biocompatibility was comparable to that of pure Ti and the quinary BioHEA, and superior to that of SUS316L. This study demonstrates the validity of a novel entropy-based guideline for increasing the mixing entropy to achieve metallic materials with ultrahigh strength.
Publisher
Elsevier Ltd
Source Title
Materials Chemistry and Physics
Volume (Issue)
316
Page
129120
Date of Issued
2024-04-01
Language
English
Handle URL
https://hdl.handle.net/11094/94897
PISSN
02540584
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.matchemphys.2024.129120
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution 4.0 International License.
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Category
学術雑誌論文 Journal Article