Improvement in fatigue strength while keeping low Young's modulus of a β-type titanium alloy through yttrium oxide dispersion

Xiu Song; Mitsuo Niinomi; Masaaki Nakai; Harumi Tsutsumi; Lei Wang

doi:10.1016/j.msec.2011.12.007

Improvement in fatigue strength while keeping low Young's modulus of a β-type titanium alloy through yttrium oxide dispersion

Xiu Song, Mitsuo Niinomi, Masaaki Nakai, Harumi Tsutsumi, Lei Wang

Materials Development Division

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

Improvement in fatigue strength in spite of maintaining low Young's modulus was achieved in Ti-29Nb-13Ta-4.6Zr (TNTZ) by hard-particles dispersion. A certain amount of Y₂O₃ additions was added into TNTZ. TNTZ with 0.05-1.00mass%Y consists of a β-phase with a small amount of Y ₂O₃. Young's moduli of TNTZ with 0.05-1.00mass%Y are maintained low, and are almost similar to that of TNTZ without Y ₂O₃. The tensile strength of TNTZ with 0.05-1.00mass%Y is slightly improved and the elongation does not deteriorate by Y₂O ₃ additions. However, the 0.2% proof stress decreases with the increase in Y concentration. Although tensile properties are not changed drastically, the fatigue strength is significantly improved by Y ₂O₃ additions. The dispersion of Y₂O ₃ particle increases the resistance to fatigue initiation. However, Y₂O₃ with too large diameter at the surface of the specimen works harmfully as the fatigue initiation site. The Y₂O ₃ diameter and volume fraction increase with the increase in Y concentration. As a result, the fatigue limit of the alloys with 0.05-1.00mass%Y firstly increases and then decreases with the increase in Y concentration. TNTZ with 0.1mass% Y exhibits the best combination of higher fatigue strength and low Young's modulus.

Original language	English
Pages (from-to)	542-549
Number of pages	8
Journal	Materials Science and Engineering C
Volume	32
Issue number	3
DOIs	https://doi.org/10.1016/j.msec.2011.12.007
Publication status	Published - 2012 Apr 1

Keywords

Biomaterial
Fatigue properties
Rare earth oxide
Young's modulus
β-type titanium alloy

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msec.2011.12.007

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@article{efb0db2411f14b0fad0b6bd09ad8f51e,

title = "Improvement in fatigue strength while keeping low Young's modulus of a β-type titanium alloy through yttrium oxide dispersion",

abstract = "Improvement in fatigue strength in spite of maintaining low Young's modulus was achieved in Ti-29Nb-13Ta-4.6Zr (TNTZ) by hard-particles dispersion. A certain amount of Y2O3 additions was added into TNTZ. TNTZ with 0.05-1.00mass%Y consists of a β-phase with a small amount of Y 2O3. Young's moduli of TNTZ with 0.05-1.00mass%Y are maintained low, and are almost similar to that of TNTZ without Y 2O3. The tensile strength of TNTZ with 0.05-1.00mass%Y is slightly improved and the elongation does not deteriorate by Y2O 3 additions. However, the 0.2% proof stress decreases with the increase in Y concentration. Although tensile properties are not changed drastically, the fatigue strength is significantly improved by Y 2O3 additions. The dispersion of Y2O 3 particle increases the resistance to fatigue initiation. However, Y2O3 with too large diameter at the surface of the specimen works harmfully as the fatigue initiation site. The Y2O 3 diameter and volume fraction increase with the increase in Y concentration. As a result, the fatigue limit of the alloys with 0.05-1.00mass%Y firstly increases and then decreases with the increase in Y concentration. TNTZ with 0.1mass% Y exhibits the best combination of higher fatigue strength and low Young's modulus.",

keywords = "Biomaterial, Fatigue properties, Rare earth oxide, Young's modulus, β-type titanium alloy",

author = "Xiu Song and Mitsuo Niinomi and Masaaki Nakai and Harumi Tsutsumi and Lei Wang",

note = "Funding Information: This work was supported in part by the China Scholarship Council (CSC), China ; Grant-in-Aid for Young Scientists ( 21760549 ), MEXT (Tokyo, Japan); the Global COE Materials Integration Program (International Center of Education and Research ), Tohoku University; R&D Institute of Metals and Composites for Future Industries (Tokyo, Japan ); Interuniversity Cooperative Research Program of the Advanced Research Center of Metallic Glasses, Institute for Materials Research, Tohoku University (Sendai, Japan ); The industrial Technology Research Grant Program in 2009 from the New Energy and Industrial Technology Development Organization, NEDO (Kawasaki, Japan); and the project between Tohoku University and Kyusyu University on {"}Highly-functional Interface Science: Innovation of Biomaterials with Highly Functional Interface to Host and Parasite,{"} MEXT (Tokyo, Japan). The authors would like to express great thanks to Daido Steel Co., Ltd. for supplying the materials.",

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doi = "10.1016/j.msec.2011.12.007",

language = "English",

volume = "32",

pages = "542--549",

journal = "Materials Science and Engineering C",

issn = "0928-4931",

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T1 - Improvement in fatigue strength while keeping low Young's modulus of a β-type titanium alloy through yttrium oxide dispersion

AU - Song, Xiu

AU - Niinomi, Mitsuo

AU - Nakai, Masaaki

AU - Tsutsumi, Harumi

AU - Wang, Lei

N1 - Funding Information: This work was supported in part by the China Scholarship Council (CSC), China ; Grant-in-Aid for Young Scientists ( 21760549 ), MEXT (Tokyo, Japan); the Global COE Materials Integration Program (International Center of Education and Research ), Tohoku University; R&D Institute of Metals and Composites for Future Industries (Tokyo, Japan ); Interuniversity Cooperative Research Program of the Advanced Research Center of Metallic Glasses, Institute for Materials Research, Tohoku University (Sendai, Japan ); The industrial Technology Research Grant Program in 2009 from the New Energy and Industrial Technology Development Organization, NEDO (Kawasaki, Japan); and the project between Tohoku University and Kyusyu University on "Highly-functional Interface Science: Innovation of Biomaterials with Highly Functional Interface to Host and Parasite," MEXT (Tokyo, Japan). The authors would like to express great thanks to Daido Steel Co., Ltd. for supplying the materials.

PY - 2012/4/1

Y1 - 2012/4/1

N2 - Improvement in fatigue strength in spite of maintaining low Young's modulus was achieved in Ti-29Nb-13Ta-4.6Zr (TNTZ) by hard-particles dispersion. A certain amount of Y2O3 additions was added into TNTZ. TNTZ with 0.05-1.00mass%Y consists of a β-phase with a small amount of Y 2O3. Young's moduli of TNTZ with 0.05-1.00mass%Y are maintained low, and are almost similar to that of TNTZ without Y 2O3. The tensile strength of TNTZ with 0.05-1.00mass%Y is slightly improved and the elongation does not deteriorate by Y2O 3 additions. However, the 0.2% proof stress decreases with the increase in Y concentration. Although tensile properties are not changed drastically, the fatigue strength is significantly improved by Y 2O3 additions. The dispersion of Y2O 3 particle increases the resistance to fatigue initiation. However, Y2O3 with too large diameter at the surface of the specimen works harmfully as the fatigue initiation site. The Y2O 3 diameter and volume fraction increase with the increase in Y concentration. As a result, the fatigue limit of the alloys with 0.05-1.00mass%Y firstly increases and then decreases with the increase in Y concentration. TNTZ with 0.1mass% Y exhibits the best combination of higher fatigue strength and low Young's modulus.

AB - Improvement in fatigue strength in spite of maintaining low Young's modulus was achieved in Ti-29Nb-13Ta-4.6Zr (TNTZ) by hard-particles dispersion. A certain amount of Y2O3 additions was added into TNTZ. TNTZ with 0.05-1.00mass%Y consists of a β-phase with a small amount of Y 2O3. Young's moduli of TNTZ with 0.05-1.00mass%Y are maintained low, and are almost similar to that of TNTZ without Y 2O3. The tensile strength of TNTZ with 0.05-1.00mass%Y is slightly improved and the elongation does not deteriorate by Y2O 3 additions. However, the 0.2% proof stress decreases with the increase in Y concentration. Although tensile properties are not changed drastically, the fatigue strength is significantly improved by Y 2O3 additions. The dispersion of Y2O 3 particle increases the resistance to fatigue initiation. However, Y2O3 with too large diameter at the surface of the specimen works harmfully as the fatigue initiation site. The Y2O 3 diameter and volume fraction increase with the increase in Y concentration. As a result, the fatigue limit of the alloys with 0.05-1.00mass%Y firstly increases and then decreases with the increase in Y concentration. TNTZ with 0.1mass% Y exhibits the best combination of higher fatigue strength and low Young's modulus.

KW - Biomaterial

KW - Fatigue properties

KW - Rare earth oxide

KW - Young's modulus

KW - β-type titanium alloy

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Improvement in fatigue strength while keeping low Young's modulus of a β-type titanium alloy through yttrium oxide dispersion

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Keywords

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