Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
권호 표지

Effect of Isochronic Aging on Transformation Behavior in Ti-50.85at%Ni Alloy

Ti-50.85atNi 합금의 변태거동 및 형상기억특성 미치는 시효처리의 영향

  • Kim, J.I. (Materials and Science Engineering, Dong-A University) ;
  • Sung, J.H. (Materials and Science Engineering, Dong-A University) ;
  • Kim, Y.H. (Materials and Science Engineering, Dong-A University) ;
  • Lee, J.H. (Materials and Science Engineering, Dong-A University) ;
  • Miyazaki, S. (Institute of Materials Science, University of Tsukuba)
  • Published : 2009.03.30
Download PDF
⟨ Previous Next ⟩

Abstract

Effect of isochronic aging on transformation behavior of Ti-50.85at%Ni alloy were investigated by differential scanning calorimeter (DSC). The martensitic transformation temperature increases with increasing annealing temperature until reaching a maximum, and then decreases with further increasing annealing temperature. This can be rationalized by interaction between the distribution of $Ti_3Ni_4$ precipitates and Ni content in the matrix. The R-phase transformation temperature increases with increasing annealing temperature until reaching a maximum, and then decreases with a further increase of annealing temperature. This is attributed to the change of Ni content in the matrix caused by precipitation of $Ti_3Ni_4$. The occurrence of the multiple-stage martensitic and R-phase transformation is attributed to precipitation-induced inhomogeneity of the matrix, both in terms of composition and of internal stress fields.

Keywords

References

  1. S. Miyazaki, Y. Ohmi, K. Otsuka, and Y. Suzuki : J de Phys, 43 (1982) (suppl.12) : C4-255~260
  2. S. Miyazaki : In: T. W. Duerig et al., editors. Engineering Aspects of Shape Memory Alloys. Butterworth-Heinenmann (1990) pp. 394-413
  3. H. C. Lin and S. K. Wu : Acta Metall Mater., 42 (1994) 1623 https://doi.org/10.1016/0956-7151(94)90371-9
  4. D. Wurzel : Mater Sci and Eng., A 273-275 (1999) 643 https://doi.org/10.1016/S0921-5093(99)00338-X
  5. S. Miyazaki and K. Otsuka : Metall. Trans. A., 17A (1986) 53
  6. S. Miyazaki, I. Shiota, K. Otsuka, and H. Tamura : MRS Int'l. Mtg. on Adv. Mats., 9 (1989) 153-156
  7. J. I. Kim and S. Miyazaki : Acta Mater., 53 (2005) 4545 https://doi.org/10.1016/j.actamat.2005.06.009
  8. T. H. Nam, T. Saburi and K. Shimizu : Mater. Trans. JIM, 31 (1990) 959
  9. C. M. Hwang, M. Meichle, M. B. Salamon, and C. M. Wayman : Phil. Mag. A, 47 (1983) 9 https://doi.org/10.1080/01418618308243106
  10. C. M. Hwang and C. M. Wayman : Scripta. Metall., 17 (1983) 1449 https://doi.org/10.1016/0036-9748(83)90374-5
  11. J. S. Zhu and R. Gotthardt : Phys. Lett. A, 132 (1988) 279 https://doi.org/10.1016/0375-9601(88)90566-X
  12. G. Airoldi, G. Riva, and B. Rivolta : Proc. MRS Int. Mtg. Adv. Mater., 9 (1989) 105
  13. D. Favier, Y. Liu, and P. G. McCormick : Scripta Metall. Mater., 28 (1993) 669 https://doi.org/10.1016/0956-716X(93)90031-M
  14. Y. Liu, X. Chen, and P. G. McCormick : J. Mater. Sci, 32 (1997) 5979 https://doi.org/10.1023/A:1018615127911
  15. L. Bataillard, J. –E. Bidaux, and R. Gotthardt : Phil. Mag. A, 78 (1998) 327 https://doi.org/10.1080/01418619808241907
  16. Y. Liu and D. Favier : J. Phys IV(France), 11 (Pr8) (2001) 113 https://doi.org/10.1051/jp4:2001820
  17. J. Khalil-Allafi, X. Ren, and G. Eggeler : Acta Mater., 50 (2002) 793 https://doi.org/10.1016/S1359-6454(01)00385-8
  18. J. Khalil-Allafi, A. Dlouhy, and G. Eggeler : Acta Mater., 50 (2002) 4255 https://doi.org/10.1016/S1359-6454(02)00257-4
  19. A. Dlouhy, J. Khalil-Allafi, and G. Eggeler : Phil. Mag. A, 83 (2003) 339 https://doi.org/10.1080/0141861021000034531
  20. Y. Liu and H. Yang : A Viogt, Mater. Sci Eng. A, 360 (2003) 350 https://doi.org/10.1016/S0921-5093(03)00443-X
  21. G. Eggeler, J. Khalil-Allafi, G. Collerthan, C. Somsen, W. Schmahl, D. sheptyyakov, J. Smart Mater. Struct., 14 (2005) S186 https://doi.org/10.1088/0964-1726/14/5/002
  22. J. I. Kim, Y. Liu, and S. Miyazaki : Acta Mater., 52 (2004) 487 https://doi.org/10.1016/j.actamat.2003.09.032
  23. Y. Liu, J. I. Kim, and S. Miyazaki : Phil. Mag A, (2004) 2083 https://doi.org/10.1080/14786430410001678262
  24. F. Laves and H. J. Wallbaum : Z. Krist., 101 (1939) 78
  25. M. Nishida and C. M. Wayman : Metall. Trans., 18A (1987) 785
  26. T. Hara, T. Ohba, K. Otsuka and M. Nishida : Mater. Trans. JIM, 38 (1997) 277
  27. T. Suburi, A. Nenno and T. Fukuda : J. Lesscommon Met., 125 (1986) 157 https://doi.org/10.1016/0022-5088(86)90090-1
  28. M. Nishida, C. M. Wayman, R. Kainuma and T. Honma : Scripta. Metal., 20 (1986) 899 https://doi.org/10.1016/0036-9748(86)90463-1
  29. T. Tadaki, Y. Nakata, K. Shimizu and K. Otsuka : Japan Inst. Metals, 27 (1986) 731 https://doi.org/10.2320/matertrans1960.27.731
  30. J. I. Kim and S. Miyazaki : submitted to Acta. Mater. 'The Metastable Equilibrium between TiNi and Ti$_{3}$Ni$_{4}$ precipitates in Ni-rich Ti-Ni Alloys'