Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
권호 표지

The Effect of the Heat Treatment Conditions on the Microstructure and Hardness of Ti-Nb Alloys

Ti-Nb계 합금의 미세조직 및 경도변화에 미치는 열처리 조건의 영향

  • Lee, Doh-Jae (Dept. of Metallurgical Engineering, Chonnam National University) ;
  • Lee, Kyung-Ku (Dept. of Metallurgical Engineering, Chonnam National University) ;
  • Lee, Kwang-Min (Dept. of Metallurgical Engineering, Chonnam National University) ;
  • Hwang, Ju-Young (Dept. of Metallurgical Engineering, Chonnam National University)
  • 이도재 (전남대학교 공과대학 금속공학과) ;
  • 이경구 (전남대학교 공과대학 금속공학과) ;
  • 이광민 (전남대학교 공과대학 금속공학과) ;
  • 황주영 (전남대학교 공과대학 금속공학과)
  • Published : 2003.08.20
Download PDF
⟨ Previous Next ⟩

Abstract

Ti-3wt.%Nb(${\alpha}$type), Ti-20wt.%Nb(${\alpha}+{\beta}$,type) and Ti-40wt.%Nb(${\beta}$type) alloys were melted by vacuum are remelting. The specimens were homogenized at 1050$^{\circ}C$ for 24 hr and were then hot rolled to 50% reduction. Each alloys were solution heat treated at ${\beta}$ zone and ${\alpha}+{\beta}$, zone after homogenization, and then aged. The microstructural and hardness changes in Ti-Nb alloys with Nb contents were investigated by SEM, XRD and hardness tester. The microstructural change from equiaxied to acicular and the increase of ${\beta}$ phase in Ti-Nb alloys were obtained when the Nb content increased. The higher hardness value of ${\alpha}+{\beta}$type alloy was obtained compared to the other alloys.

Keywords

References

  1. P. J. Prendergast: J. Biomed Eng., 12(1990), 379 https://doi.org/10.1016/0141-5425(90)90020-N
  2. R. Boyer, G. Welsch, E. W. Collings: Materials properties of Handbook, Titanium alloys, ASMI (1994)
  3. D. M. Brunette, P. Tengvall, M. Textor, P. Thomsen : Titanium in medicine, Engineering materials, Springer (2001)
  4. E. W. Collings : The physical metallurgy of Titanium alloys, ASM (1986)
  5. Okazaki Y, Kyo K, Ito Y, Tateishi T : J. Japan Inst. Metals, 'Effect of Mo and Pd on corrosi-on resistance of V-free titanium alloys for medical implantation', 10 (1995), 1061
  6. T. Ahmed, M. Long, J. Silvestri, C. Ruiz, H. J. Rack : Titanium 95 science and technology, 2 (1995), 1760
  7. S. G. Steinemann : Evalution of Biomaterials, 'Corrosion of Surgical Implants in-vivo and on-vitro Tests' John Wiley & Sons Ltd. 1 (1980)
  8. S. M. Allameh, R. W. Hayes, M. Li, E. A. Loria, D. J. Srolovitz, W. O. Soboyejo : Materials science and engineering, 'Microstructure and mechanical properties of $\beta$ Nb-Ti based alloy', A328 (2002), 122
  9. M. A. Daeubler, D. Helm, G. Lutjering : Titanium 95 Science and Technology, (1995), 709
  10. H. J. Cho, J. H. Lee : Matehal Research, 'Microstructure and tensile characteristics of T1-6A1-4V alloy by double solution treatment', 4,6 (1994), 626
  11. Y. U. Kim et al., : J. Korean Foundrymen's Society, 18, 5 (1998), 76.
  12. H. J. Cho, J. H. Lee : K. J. Material Research, 4, 6 (1994), 626
  13. G. Terlinde, G. Fischer: Titanium 95, Science and Technology, (1995), 2177
  14. Matthew J. Donachie, Jr. : Titanium a technical guide 2ed., ASMI (2000)
  15. Dujovne A. R. et al.: The journal of arthroplasty, 'Mechanical compatibility of noncemented hip prostheses with the human femur', 8 (1993), 7 https://doi.org/10.1016/S0883-5403(06)80102-6
  16. E. Kobayashi, H. Doi, T. Yoneyama, H. Hamanaka : J. of materials science, materials in medicine, 'Influence of aging heat treatment on mechanical prperties of biomedical Ti-Zr based ternary alloys containing niobium', 9 (1998), 625
  17. Chiaki Ouchi, Hideaki Fukai, Kohei Hasegawa : Materials science and engineering, 'Microstructural charateristics and unique properties obtained by solution treating or aging in $\beta$-rich $\alpha$/$\beta$titanium alloy', A263(1999), 132.