2001 Fiscal Year Final Research Report Summary
Alloy design ofbiomedically safe alloys consist of IVa and Va groups elements
| Project/Area Number |
10309006
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
広領域
|
|---|
| Research Institution | Tokyo Medical and Dental University |
|---|
Principal Investigator |
KOBAYASHI Equo Tokyo Medical and Dental University, Institute of Biomaterials and Bioengineering, Research Associate, 生体材料工学研究所, 助手 (40242268)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
HAMANAKA Hitoshi Tokyo Medical and Dental University, Institute of Biomaterials and Bioengineering, Professor, 生体材料工学研究所, 教授 (10013955)
YONEYAMA Takayuki Tokyo Medical and Dental University, Institute of Biomaterials and Bioengineering, Associate Professor, 生体材料工学研究所, 助教授 (00220773)
DOI Hisashi Tokyo Medical and Dental University, Institute of Biomaterials and Bioengineering, Research Associate, 生体材料工学研究所, 助手 (30251549)
|
|---|
| Project Period (FY) |
1998 – 2001
|
| Keywords | Titanium Alloy / Biocompatibility / Biological compatibility / Mechanical compatibility / Alloy design / Multi axial stress / Fatigue property / Mechanical property |
|---|
| Research Abstract |
In the present study, Alloy design of Ti-Zr based alloys were conducted aiming development of biomedical alloys with biological safety. With titanium-zirconium-niobium ternary alloy compositions, two kind of alloys, i.e. high strength alloys and low elastic modulus alloys, were developed. The high strength alloys were obtained by relatively small amount of Nb addition to the binary Ti-Zr alloy (ratio of Ti:Zr was fixed to unity) followed by suitable aging heat treatment. The low elastic modulus alloys were developed as the beta phase alloys by relatively large amount of Nb addition to the binary alloy and quenching. Both alloys exhibited better properties as compared to the conventional biomedical titanium alloys.
Along with the alloy design, mechanical property evaluation of developed alloys were carried out with conventional tensile test together with torsional test and combined (tensile/torsional) test. Additionally, tensile fatigue test, torsional fatigue test and combined fatigue test were conducted to investigate fatigue property. Fatigue life estimation of torsional and combined fatigue from data of the tensile fatigue life was also carried out. It was shown that using of Basquin parameter on the von Mises type equivalent stress and consideration of the size effect led to good fatigue life estimation.
|
-
-
-
-
-
-
-
[Publications] E Kobayashi, H Mochizuki, H Doi, T Yoneyama, M Otsuka, H Hamanaka: "Mechanical properties of Ti-6Al-7Nb and Ti-5Al-13Ta alloys under combined (tensile/torsional) stress"Structural Biomaterials for the 21st Century, Eds M Niinomi, T Okabe, E M Taleff, D R Lesuer, H E Lippard. TMS. 115-119 (2001)
Description
「研究成果報告書概要(欧文)」より
-
[Publications] E Kobayashi, H Mochizuki, H Doi, T Yoneyama, M Otsuka, H Hamanaka: "Tensile/torsional fatigue of biomedical titanium alloys"Structural Biomaterials for the 21st Century, Eds M Niinomi, T Okabe, E M Taleff, D R Lesuer, H E Lippard. TMS. 121-126 (2001)
Description
「研究成果報告書概要(欧文)」より
-
-
