Analysis of mechanism of peculiar high strength and ductility of metastable beta-type titanium alloy with high oxygen content for structural biomaterials
| Project/Area Number |
17H03419
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural/Functional materials
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| Research Institution | Meijo University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
赤堀 俊和 名城大学, 理工学部, 准教授 (00324492)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2019: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2017: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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| Keywords | 生体用β型チタン合金 / TNTZ / 高酸素 / 力学的特性 / 降伏現象 / 歪速度 / 生体用材料 / 準安定β型チタン合金 / 高酸素添加 / 高強度・高延性 / 変形挙動 / ベータ型チタン合金 / 生体構造 / 特異力学特性 / 生体用金属材料 / ユビキタス元素 / 相変態 / β型チタン合金 |
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| Outline of Final Research Achievements |
Macroscopic and microscopic deformation behaviors of Ti-29Nb-13Ta-4,4Zr (TNTZ) with low and high oxygen contents was investigated by conducting tensile tests with different strain rates, deformation observation on the surface of the specimen by optical microscopy, microstructural analysis by electron back scatter diffraction (EBSD), microstructural observations by optical microscopy and transmission electron microscopy (TEM). The peculiar deformation behavior of TNTZ with a high amount oxygen, where both strength and ductility are increased, has been clarified by conjunction with assuming that the formation of the oxygen clusters in the grains occurs.
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| Academic Significance and Societal Importance of the Research Achievements |
チタン合金では酸素は不純物元素と見なされ、脆化をもたらすとされて来たが、本研究成果ではそれを覆す結果が得られている。すなわち、Ti-29Nb-13Ta-4.6Zr合金（TNTZ）では、高酸素添加により強度および延性の両者が向上する。そのメカニズムの解明は、TNTZだけでなく、他のチタン合金への適用が可能と考えられ、酸素を用いた高機能性チタン合金の合金設計および開発に貢献できると考えられ学術的な意義が高い。このことは、安価な侵入型元素である酸素を用いての高機能インプラント器具の開発が可能となる可能性とその低コスト化が期待され社会的意義も大きいと言えよう。
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Report
(4 results)
Research Products
(40 results)
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[Journal Article] Application of Atmospheric-Pressure Plasma Treatment to Coat Ti-Alloy Orthodontic Wire with White Oxide Laye2020
Author(s)
Naho Mitsuishi, Eri Miura-Fujiwara, Motoko Yamada, Tadachika Chiba, Hisashi Sato, Yoshimi Watanabe, Michiko Ito, Seigo Takashima, Masaaki Nakai, Toshikazu Akahori, Masaki Tanaka, Mitsuo Niinomi, and Tsutomu Takeuchi
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Journal Title
J. J. A. P,
Volume: 59
Issue: SA
Pages: SAAC09-SAAC09
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Low Young's modulus and High Strength Obtained in Ti-Nb-Zr-Cr Alloys by Optimizing Zr Conten2020
Author(s)
Qiang Li, Cheng Chao, Junjie Li, Ke Zhang, Kai Zhou, Masaaki Nakai, Mitsuo Niinomi, Kenta Yamanaka, Daixiu Wei, Akihiko Chiba, Takayoshi Nakano.
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Journal Title
Journal of Materials Engineering and Performance
Volume: -
Issue: 5
Pages: 2871-2878
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Low Springback and Low Young’s Modulus in Ti–29Nb–13Ta–4.6Zr Alloy Modified by Mo Addition2019
Author(s)
Qiang Li, Qiang Qi, Junjie Li, Masaaki Nakai, Mitsuo Niinomi, Yuichro Koizumi, Kenta Yamanaka, DaiXiu Wei, Takayuki Nakano, Akihiko Chiba, Xuyan Liu, and Deng Pan
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Journal Title
MATERIALS TRANSACTIONS
Volume: 60
Issue: 9
Pages: 1755-1762
DOI
NAID
ISSN
1345-9678, 1347-5320
Year and Date
2019-09-01
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Effects of Fe on Microstructures and Mechanical Properties of Ti–15Nb–25Zr–(0, 2, 4, 8)Fe Alloys Prepared by Spark Plasma Sintering2019
Author(s)
Q. Li, X. Yuan, J. Li, P. Wang, M. Nakai, M. Niinomi, T. Nakano, A. Chiba, X. Liu, D. Pan
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Journal Title
MATERIALS TRANSACTIONS
Volume: 60
Issue: 9
Pages: 1763-1768
DOI
NAID
ISSN
1345-9678, 1347-5320
Year and Date
2019-07-01
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Development of Low Young’s Modulus Ti-Nb-based Alloys with Cr Addition2019
Author(s)
Qiang Li, Guanghao Ma, Junjie Li, Mitsuo Niinomi, Masaaki Nakai, Yuichro Koizumi, DaiXiu Wei, Tomoyuki Kakeshita, Takayuki Nakano, Akihiko Chiba, Xuyan Liu, Kai Zhou, Deng Pan
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Journal Title
J. Mater. Sci.
Volume: 54
Issue: 10
Pages: 8675-8683
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Whitening Process for TNTZ Orthodontic Wire by Combination of Shot-peening and Atmospheric-pressure Plasma Treatment2019
Author(s)
N. Mitsuishi, E. Miura-Fujiwara, M. Yamada, T. Chiba, H. Sato, Y. Watanabe, M. Ito, S. Takashima, M. Nakai, T. Akahori, M. Tanaka, M. Niinomi, and T. Takechi
Organizer
The 14th World Conf. on Titanium
Related Report
Int'l Joint Research
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