2007 Fiscal Year Final Research Report Summary
Control of microstructure and mechanical anisotropy of biomedical superelastic titanium alloys through introducing high density lattice defects.
| Project/Area Number |
17360334
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Structural/Functional materials
|
|---|
| Research Institution | Tokyo Institute of Technology |
|---|
Principal Investigator |
HOSODA Hideki Tokyo Institute of Technology, Recision and Intelligerce Laboratory, Associate Professor (10251620)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
WAKASHIMA Kenji Tokyo Institute of Technology, Precision and Intelligence Laboratory, Professor (70016799)
IMAMURA Tomonari Tokyo Institute of Technology, Precision and Intelligence Laboratory, Assistant Professor (60361771)
|
|---|
| Project Period (FY) |
2005 – 2007
|
| Keywords | biomedical shape memory alloy / titanium alloy / microstructure / mechanical properties / texture / superelasticity / thermomechanical treatment / cold rolling |
|---|
| Research Abstract |
The purpose of this research is to clarify the relationships among microstructures, defects and mechanical properties of Ni-free biomedical shape memory alloys, especially TiNbAl alloys, through thermo-mechanical treatments to introduce high-energy and high-density lattice defects by severe deformations. In order to enhance their superelastic properties, material strengthening to increase critical stress for slip deformation is effective and this was tried by severe deformations of cold rolling up to 99% in reduction thickness and rapid solidification. Firstly, the formation of texture and superelastic deformation were investigated using Ti-26Nb-3A1 alloy with relatively low martensitic transformation temperatures. It was found that the development of deformation texture is strongly related to true strain and that the texture is rapidly grown after when the true strain becomes over 3. Although the grain size after the solution treatment is coarse around 500μm, the grains become fine an
… More
d needle-like shape elongated with the rolling direction. Then, the development of recrystallization texture was investigated with various cold rolling reductions. It was found that the development of recrystallization texture is strongly dependent on reduction rate, and that different textures are developed. {001}_β<110>_β type texture is formed when cold rolling reduction is lower than 90%, and further increasing cold rolling reduction, the texture formed is changed to {112}_β<110>_β type. {001}_β<110>_β type exhibits less anisotropy in superelasticity than {112}_β<110>_β, resulting that {001}_β<110>_β type texture is more useful for practical applications. Secondly, the texture formation of α" and α"+β type TiNbA1 alloys was investigated. It was found that deformation and recrystallization textures are {112}_β<110>_β type and {111}_β<110>_β for the α"+β alloy, respectively. Besides, deformation and recrystallization textures of α" alloy are {223}_<α"><302>_<α"> type and {011}_<α"><311>_<α"> for the α" alloy, respectively. Therefore, the type of texture formation as well as superelasticity strongly depends on the type of stable phase in the TiNbAl alloys. Similar results were obtained for the cold rolled wires. Finally, the rapid solidification was done for Ti-24Nb-3A1 but neither texture nor fine grains were formed even though the high energy process of the rapid solidification. It is conclude that texture and superelastic properties of the titanium alloys can be controlled through a proper thermomechanical treatment combined with severe deformation. Less
|
-
-
-
-
-
[Journal Article] Mechanical Properties of Ti-Nb Shape Memory Alloys Containing 3d Transition Metal Elements(V, Cr, Mn, Fe, Co, Ni and Cu)2007
Author(s)
H. Hosoda, Y. Horiuchi, K. Nakayama, T. Inamura, K. Wakashima, S. Miyazaki
-
Journal Title
Ti-2007 Science and Technology II
Pages: 1517-1520
Description
「研究成果報告書概要(和文)」より
Peer Reviewed
-
-
-
-
-
-
-
-
-
-
[Journal Article] Rolling Texture of α"-Phase in Ti-22mol%Nb-3mol%A1 Biomedical Shape Memory Alloy2007
Author(s)
T., Inamura, R., Shimizu, J. I., Kim, H. Y., Kim, K., Wakashima, S., Miyazaki, H., Hosoda
-
Journal Title
Materials Science Forum 561-565
Pages: 1517-1520
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Orientation Dependent Internal Friction of Textured Ti-Nb-Al Shape Memory Alloy2007
Author(s)
Y., Yamamoto, T., Inamura, K., Wakashima, H. Y., Kim, S., Miyazaki, H., Hosoda
-
Journal Title
Materials Science Forum 561-565
Pages: 15331536
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Composition dependent crystallography of α-martensite in Ti-Nb-based β-titanium alloy2007
Author(s)
T., Inamura, J. I., Kim, H. Y., Kim, H., Hosoda, K., Wakashima, S., Miyazaki
-
Journal Title
Philosophical Magazine 87
Pages: 3325-3350
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Microstructure of Ti-24Nb-3AI Melt-Spun Ribbon2007
Author(s)
Y., Yamamoto, T., Inamura, H., Hosoda, K., Wakashima, S., Miyazaki, S., Tsurekawa, T., Nakano, Y., Umakoshi
-
Journal Title
Ti-2007 Science and Technology II
Pages: 1529-1532
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Mechanical Properties of Ti-Nb Shape Memory Alloys Containing 3d Transition Metal Elements (V, Cr, Mn, Fe, Co, Ni and Cu)2007
Author(s)
H., Hosoda, Y., Horiuchi, K., Nakayama, T., Inamura, K., Wakashima, S., Miyazaki
-
Journal Title
Ti-2007 Science and Technology II
Pages: 1517-1520
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Internal Twin and Defect of α-Martensite in Ti-NB-AI Shape Memory Alloy2007
Author(s)
T., Inamura, J. I., Kim, H. Y., Kim, K., Wakashima, S., Miyazaki, H., Hosoda
-
Journal Title
Ti-2007 Science and Technology II
Pages: 1521-1524
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Effect of In Addition on Shape Memory Characteristics of Ti-Nb alloys2007
Author(s)
Y., Fukui, O., Katsuda, T., Inamura, S., Miyazaki, H., Hosoda, K., Wakashima
-
Journal Title
Ti-2007 Science and Technology II
Pages: 1525-1528
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Effect of Cu Addition on Shape Memory Behavior of Ti-18mol%Nb Alloys2007
Author(s)
Y., Horiuchi, K., Nakayama, T., Inamura, H. Y., Kim, K., Wakashima, S., Miyazaki, H., Hosoda
-
Journal Title
Materials Transactions 48
Pages: 414-421
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Effect of Boron Concentration on Martensitic Transformation Temperatures, Stress for Inducing Martensite and Slip Stress of Ti-24mol%Nb-3mol%Al Superelastic Alloy2007
Author(s)
Y., Horiuchi, T., Inamura, H. Y., Kim, K., Wakashima, S., Miyazaki, H., Hosoda
-
Journal Title
Materials Transactions 48
Pages: 407-413
Description
「研究成果報告書概要(欧文)」より
-
[Journal Article] Damping Capacity of Ti-Nb-Al Shape Memory β-Titanium Alloy with {001}_b<110>_b Texture2007
Author(s)
T., Inamura, H., Hosoda, K., Wakashima, J. I., Kim, H. Y., Kim, S., Miyazaki
-
Journal Title
Materials Transactions 48
Pages: 395-399
Description
「研究成果報告書概要(欧文)」より
-
-
[Journal Article] Orthodontic Tooth Movement in Rats Using Ni-Free Ti-Based Shape Memory Alloy Wire2007
Author(s)
H., Kanetaka, Y., Shimizu, H., Hosoda, R., Tomizuka, A., Suzuki, S., Urayama, T., Inamura, S., Miyazaki, T., Takano, Yamamoto
-
Journal Title
Materials Transactions 48
Pages: 367-372
Description
「研究成果報告書概要(欧文)」より
-
-
[Journal Article] Effect of Ti_3Si on Texture in Ti-Nb Based Shape Memory Alloys2007
Author(s)
R., Shimizu, K., Masumoto, Y., Fukui, T., Inamura, K., Wakashima, S., Miyazaki, H., Hosoda
-
Journal Title
Mat. Res. Soc. Proc 980
Pages: 110980-05-50
Description
「研究成果報告書概要(欧文)」より
-
-
[Presentation] Effect of Texture on Internal Friction of Ti-24mol%Nb-3mol%Al Shape Memory Alloy2007
Author(s)
T., Inamura, Y., Yamamoto, H. Y., Kim, K., Wakashima, H., Hosoda, S., Miyazaki
Organizer
The International Conference on Shape Memory and Superelastic Technologies
Place of Presentation
Tsukuba International Congress Center
Year and Date
2007-12-05
Description
「研究成果報告書概要(欧文)」より
-
-
-
-
-
-
[Presentation] Phase Constitution and Mechanical Properties of Near-Eutectoid Ti-Au Alloys Containing 3d Transition Metal Elements2007
Author(s)
T., Ishigaki, Y., Matsuki, T., Inamura, K., Wakashima H., Hosoda, S., Miyazaki
Organizer
The International Conference on Shape Memory and Superelastic Technologies
Place of Presentation
Tsukuba International Congress Center
Year and Date
2007-12-03
Description
「研究成果報告書概要(欧文)」より
-
-
[Presentation] Microstructure and Shape Memory Property of Ti-24Nb-3A1 Melt-Spun Ribbon2007
Author(s)
Y., Yamamoto, Y., Tsugane, T., Inamura, H., Hosoda, K., Wakashima, S., Miyazaki, S., Tsurekawa, T., Matsuzaki, T., Nakano, Y., Umakoshi
Organizer
The llth World Conference on Titanium Abstracts
Place of Presentation
Kyoto Convention Center
Year and Date
2007-06-05
Description
「研究成果報告書概要(欧文)」より
-
-
-
-
[Presentation] Mechanical Properties of Ti-Nb Shape Memory Alloys Containing 3dTransition Metal Elements2007
Author(s)
H., Hosoda, K., Nakayama, Y., Horiuchi, T., Inamura, K., Wakashima, S., Miyazaki
Organizer
The 11th World Conference on Titanium
Place of Presentation
Kyoto Convention Center
Year and Date
2007-06-04
Description
「研究成果報告書概要(欧文)」より
