Effect of Nb Content on Microstructures and Mechanical Properties of Ti-xNb-2Fe Alloys

  • Qiang LiEmail author
  • Pu Miao
  • Junjie Li
  • Meifeng He
  • Masaaki Nakai
  • Mitsuo Niinomi
  • Akihiko Chiba
  • Takayoshi Nakano
  • Xuyan Liu
  • Kai Zhou
  • Deng Pan


β-Type Ti-Nb-based alloys exhibit satisfactory biocompatibility and low Young’s modulus for biomedical applications. The microstructure and mechanical properties of a series of Ti-(14, 16, 18, 20, 22, 24)Nb-2Fe alloys fabricated by arc melting were investigated by XRD, optical microscopy, and tensile tests. Both ω and α″ phases existed in the Ti-14Nb-2Fe alloy, while just a single β phase existed in the other alloys. Twinning is an important deformation mechanism that causes work hardening and twinning-induced plasticity. It was found in the Ti-(14, 16, 18, 20)Nb-2Fe alloys and not in the Ti-22Nb-2Fe alloy. The Ti-14Nb-2Fe alloy exhibited the highest tensile strength and the highest Young’s modulus owing to the existence of the ω phase. The tensile strength decreased gradually from 830 MPa (highest) for the Ti-14Nb-2Fe alloy to 540 MPa (lowest) for the Ti-24Nb-2Fe alloy with an increase in the Nb content. The Young’s modulus decreased from 90 GPa for the Ti-14Nb-2Fe alloy to 63 GPa for the Ti-22Nb-2Fe alloy and then increased to 71 GPa for the Ti-24Nb-2Fe alloy. Elongation shows the same trend as the Young’s modulus. The Ti-22Nb-2Fe alloy, with a low Young’s modulus of 63 GPa, tensile strength of 570 MPa, and 15% elongation, was found suitable for biomedical applications. The Ti-20Nb-2Fe alloy also exhibits a high tensile strength, a Young’s modulus ratio of 9.24 × 10−3, and 18% elongation and is thus considered another valuable Ti alloy for biomedical applications.


β stability biomaterials mechanical properties microstructures Ti-Nb alloys 



This work was partially supported by the Natural Science Foundation of Shanghai, China (No. 15ZR1428400), Shanghai Key Technology Support Program (No. 16060502400), National Natural Science Foundation of China (No. 61504080, 51771120 and 51304136), the project of Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development, Tohoku University, Japan sponsored by Ministry, Education, Culture, Sports, Science and Technology, Japan, and the Grant-in Aid for Scientific Research (B) (No. 17H03419) from Japan Society for the Promotion of Science (JSPS), Tokyo, Japan.


  1. 1.
    M. Niinomi, M. Nakai, and J. Hieda, Development of New Metallic Alloys for Biomedical Applications, Acta Biomater., 2012, 8, p 3888–3903CrossRefGoogle Scholar
  2. 2.
    M.T. Mohammed, Z.A. Khan, and A.N. Siddiquee, Beta Titanium Alloys: The Lowest Elastic Modulus for Biomedical Applications: A Review, Int. J. Chem. Nucl. Metall. Mater. Eng. A, 2014, 8, p 726–731Google Scholar
  3. 3.
    S. Bahl, A.S. Krishnamurthy, S. Suwas, and K. Chatterjee, Controlled Nanoscale Precipitation to Enhance the Mechanical and Biological Performances of a Metastable β Ti-Nb-Sn Alloy for Orthopedic Applications, Mater. Des., 2017, 126, p 226–237CrossRefGoogle Scholar
  4. 4.
    C.D. Rabadia, Y.J. Liu, G.H. Cao, Y.H. Li, C.W. Zhang, T.B. Sercombe, H. Sun, and L.C. Zhang, High-Strength β Stabilized Ti-Nb-Fe-Cr Alloys with Large Plasticity, Mater. Sci. Eng. A, 2018, 732, p 368–377CrossRefGoogle Scholar
  5. 5.
    Y.H. Li, C. Yang, H.D. Zhao, S.G. Qu, X.Q. Li, and Y.Y. Li, New Developments of Ti-Based Alloys for Biomedical Applications, Materials, 2014, 7, p 1709–1800CrossRefGoogle Scholar
  6. 6.
    M. Abdel-Hady and M. Niinomi, Biocompatibility of Ti-Alloys for Long-Term Implantation, J. Mech. Behav. Biomed. Mater., 2013, 20, p 407–415CrossRefGoogle Scholar
  7. 7.
    M. Long and H.J. Rack, Titanium Alloys in Total Joint Replacement a Materials Science Perspective, Biomaterials, 1998, 19, p 1621–1639CrossRefGoogle Scholar
  8. 8.
    M. Lai, Y. Gao, B. Yuan, and M. Zhu, Effect of Pore Structure Regulation on the Properties of Porous TiNbZr Shape Memory Alloys for Biomedical Application, J. Mater. Eng. Perform., 2015, 24, p 136–142CrossRefGoogle Scholar
  9. 9.
    Z. Chen, Y. Liu, H. Jiang, M. Liu, C.H. Wang, and G.H. Cao, Microstructures and Mechanical Properties of Mn Modified, Ti-Nb Based Alloys, J. Alloys Compd., 2017, 723, p 1091–1097CrossRefGoogle Scholar
  10. 10.
    M. Geetha, A.K. Singh, R. Asokamani, and A.K. Gogia, Ti based Biomaterials, the Ultimate Choice for Orthopaedic Implants—A Review, Prog. Mater Sci., 2009, 54, p 397–425CrossRefGoogle Scholar
  11. 11.
    G.L. Zhao, G. Wen, Y. Song, and K. Wu, Near Surface Martensitic Transformation and Recrystallization in a Ti-24Nb-4Zr-7.9Sn Alloy Substrate After Application of a HA Coating by Plasma Spraying, Mater. Sci. Eng. C, 2011, 31, p 106–113CrossRefGoogle Scholar
  12. 12.
    P.E.L. Moraes, R.J. Contieri, E.S.N. Lopes, A. Robin, and R. Caram, Effects of Sn Addition on the Microstructure, Mechanical Properties and Corrosion Behavior of Ti-Nb-Sn Alloys, Mater. Charact., 2014, 96, p 273–281CrossRefGoogle Scholar
  13. 13.
    Q.K. Meng, Y.F. Huo, W. Ma, Y.W. Sui, J.Y. Zhang, S. Guo, and X.Q. Zhao, Design and Fabrication of a Low Modulus β-Type Ti-Nb-Zr Alloy by Controlling Martensitic Transformation, Rare Met., 2018, 37, p 789–794CrossRefGoogle Scholar
  14. 14.
    S.E. Haghighi, Y.J. Liu, G.H. Cao, and L.C. Zhang, Influence of Nb on the β → α″ Martensitic Phase Transformation and Properties of the Newly Designed Ti-Fe-Nb Alloys, Mater. Sci. Eng. C, 2016, 60, p 503–513CrossRefGoogle Scholar
  15. 15.
    H.C. Hsu, S.C. Wu, S.K. Hsu, K.H. Hsu, and W.F. Ho, Machinability Evaluation of Ti-5Nb-xFe Alloys for Dental Applications, J. Mater. Eng. Perform., 2015, 24, p 1332–1339CrossRefGoogle Scholar
  16. 16.
    D.C. Zhang, Y.F. Mao, Y.L. Li, J.J. Li, M. Yuan, and J.G. Lin, Effect of Ternary Alloying Elements on Microstructure and Superelastictity of Ti-Nb Alloys, Mater. Sci. Eng. A, 2013, 559, p 706–710CrossRefGoogle Scholar
  17. 17.
    H.C. Hsu, S.K. Hsu, S.C. Wu, C.J. Lee, and W.F. Ho, Structure and Mechanical Properties of As-Cast Ti-5Nb-xFe Alloys, Mater. Charact., 2010, 61, p 851–858CrossRefGoogle Scholar
  18. 18.
    S.E. Haghighi, Y.J. Liu, G.H. Cao, and L.C. Zhang, Phase Transition, Microstructural Evolution and Mechanical Properties of Ti-Nb-Fe Alloys Induced by Fe Addition, Mater. Des., 2016, 97, p 279–286CrossRefGoogle Scholar
  19. 19.
    C.M. Lee, W.F. Ho, C.P. Ju, and J.H.C. Lin, Structure and Properties of Titanium-25 Niobium-x Iron Alloys, J. Mater. Sci. Mater. Med., 2002, 13, p 695–700CrossRefGoogle Scholar
  20. 20.
    É.S.N. Lopes, C.A.F. Salvador, D.R. Andrade, A. Cremasco, K.N. Campo, and R. Caram, Microstructure, Mechanical Properties, and Electrochemical Behavior of Ti-Nb-Fe Alloys Applied as Biomaterials, Metall. Mater. Trans. A, 2016, 47, p 3213–3226CrossRefGoogle Scholar
  21. 21.
    Y. Bao, M. Zhang, Y. Liu, J.J. Yao, Z.M. Xiu, M. Xie, and X.D. Sun, High Strength, Low Modulus and Biocompatible Porous Ti-Mo-Fe Alloys, J. Porous Mater., 2014, 21, p 913–919CrossRefGoogle Scholar
  22. 22.
    D.R. Askeland and P.P. Phulé, Essentials of Materials Science and Engineering, Reprinted by Tsinghua University Press, Beijing, 2005, p 233Google Scholar
  23. 23.
    E. Bertrand, P. Castany, I. Péron, and T. Gloriant, Twinning System Selection in a Metastable β-Titanium Alloy by Schmid Factor Analysis, Scr. Mater., 2011, 64, p 1110–1113CrossRefGoogle Scholar
  24. 24.
    F.Q. Hou, S.J. Li, Y.L. Hao, and R. Yang, Nonlinear Elastic Deformation Behaviour of Ti-30Nb-12Zr Alloys, Scr. Mater., 2010, 63, p 54–57CrossRefGoogle Scholar
  25. 25.
    M. Niinomi, T. Akahori, and M. Nakai, In situ X-ray Analysis of Mechanism of Nonlinear Super Elastic Behavior of Ti-Nb-Ta-Zr System Beta-Type Titanium Alloy for Biomedical Applications, Mater. Sci. Eng. C, 2008, 28, p 406–413CrossRefGoogle Scholar
  26. 26.
    X. Ji, S. Emura, X.H. Min, and K. Tsuchiya, Strain-Rate Effect on Work-Hardening Behavior in β-Type Ti-10Mo-1Fe Alloy with TWIP Effect, Mater. Sci. Eng. A, 2017, 707, p 701–707CrossRefGoogle Scholar
  27. 27.
    Y.H. Hon, J.Y. Wang, and Y.N. Pan, Composition/Phase Structure and Properties of Titanium-Niobium Alloys, Mater. Trans., 2003, 44, p 2384–2390CrossRefGoogle Scholar
  28. 28.
    M. Abdel-Hady, K. Hinoshita, and M. Morinaga, General Approach to Phase Stability and Elastic Properties of β-Type Ti Alloys Using Electronic Parameters, Scr. Mater., 2006, 55, p 477–480CrossRefGoogle Scholar
  29. 29.
    P. Laheurte, A. Eberhardt, and M. Philippe, Influence of the Microstructure on the Pseudoelasticity of a Metastable Beta Titanium Alloy, Mater. Sci. Eng. A, 2005, 396, p 223–230CrossRefGoogle Scholar
  30. 30.
    Q. Li, G.H. Ma, J.J. Li, M. Niinomi, M. Nakai, Y. Koizumi, D.X. Wei, T. Kakeshita, T. Nakano, A. Chiba, X.Y. Liu, K. Zhou, and D. Pan, Development of Low-Young’s Modulus Ti-Nb-Based Alloys with Cr Addition, J. Mater. Sci., 2019, 54, p 8675–8683CrossRefGoogle Scholar
  31. 31.
    B. Sun, X.L. Meng, Z.Y. Gao, W. Cai, and L.C. Zhao, Effect of Annealing Temperature on Shape Memory Effect of Cold-Rolled Ti-16 at.%Nb Alloy, J. Alloys Compd., 2017, 715, p 16–20CrossRefGoogle Scholar
  32. 32.
    L.L. Chang, Y.D. Wang, and Y. Ren, In-situ Investigation of Stress-Induced Martensitic Transformation in Ti-Nb Binary Alloys with Low Young’s Modulus, Mater. Sci. Eng. A, 2016, 651, p 442–448CrossRefGoogle Scholar
  33. 33.
    Q. Li, M. Niinomi, M. Nakai, Z.D. Cui, S.L. Zhu, and X.J. Yang, Effect of Zr on Super-Elasticity and Mechanical Properties of Ti-24 at% Nb-(0, 2, 4) at% Zr Alloy Subjected to Aging Treatment, Mater. Sci. Eng. A, 2012, 536, p 197–206CrossRefGoogle Scholar
  34. 34.
    J.M. Chavesa, O. Florêncio, P.S. Silva, Jr., P.W.B. Marques, and C.R.M. Afonso, Influence of Phase Transformations on Dynamical Elastic Modulus and Anelasticity of Beta Ti-Nb-Fe Alloys for Biomedical Applications, J. Mech. Behav. Biomed. Mater., 2015, 46, p 184–196CrossRefGoogle Scholar
  35. 35.
    Y. Abd-elrhman, M.A.-H. Gepreel, A. Abdel-Moniema, and S. Kobayashi, Compatibility Assessment of New V-Free Low-Cost Ti-4.7Mo-4.5Fe Alloy for Some Biomedical Applications, Mater. Des., 2016, 97, p 445–453CrossRefGoogle Scholar
  36. 36.
    A. Biesiekierski, J. Lin, Y. Li, D. Ping, Y. Yamabe-Mitarai, and C. Wen, Investigations into Ti-(Nb, Ta)-Fe Alloys for Biomedical Applications, Acta Biomater., 2016, 32, p 336–347CrossRefGoogle Scholar
  37. 37.
    H. Matsumoto, S. Watanabe, and S. Hanada, Microstructures and Mechanical Properties of Metastable β TiNbSn Alloys Cold Rolled and Heat Treated, J. Alloys Compd., 2007, 439, p 146–155CrossRefGoogle Scholar
  38. 38.
    M. Niinomi, Mechanical Properties of Biomedical Titanium Alloys, Mater. Sci. Eng. A, 1998, 243, p 231–236CrossRefGoogle Scholar
  39. 39.
    K. Wang, The Use of Titanium for Medical Applications in the USA, Mater. Sci. Eng. A, 1996, 213, p 134–137CrossRefGoogle Scholar

Copyright information

© ASM International 2019
corrected publication 2019

Authors and Affiliations

  1. 1.School of Mechanical EngineeringUniversity of Shanghai for Science and TechnologyShanghaiPeople’s Republic of China
  2. 2.CAS Key Laboratory of Functional Materials and Devices for Special Environments, Xinjiang Technical Institute of Physics and ChemistryCAS, Xinjiang Key Laboratory of Electronic Information Materials and DevicesÜrümqiChina
  3. 3.School of Materials Science and EngineeringUniversity of Shanghai for Science and TechnologyShanghaiPeople’s Republic of China
  4. 4.Department of Mechanical Engineering, Faculty of Science and EngineeringKindai UniversityHigashiōsakaJapan
  5. 5.Institute for Materials ResearchTohoku UniversitySendaiJapan
  6. 6.Department of Materials and Manufacturing Science, Graduate School of EngineeringOsaka UniversitySuitaJapan
  7. 7.Department of Materials Science and Engineering, Graduate School of Science and TechnologyMeijo UniversityNagoyaJapan
  8. 8.Institute of Materials and Systems for SustainabilityNagoya UniversityNagoyaJapan
  9. 9.Faculty of Chemistry, Materials and BioengineeringKansai UniversityOsakaJapan
  10. 10.Materials Genome InstituteShanghai UniversityShanghaiPeople’s Republic of China

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