Browse > Article

Effects of Aging Treatment on Shape Memory and Fatigue Properties in Ni-rich Ti-Ni Alloy  

Kim, J.I. (Materials Science and Engineering, Dong-A University)
Sung, J.H. (Materials Science and Engineering, Dong-A University)
Miyazaki, S. (Institute of Materials Science, University of Tsukuba)
Lee, S.H. (Materials Science and Engineering, Dong-A University)
Publication Information
Journal of the Korean Society for Heat Treatment / v.20, no.1, 2007 , pp. 11-16 More about this Journal
Abstract
The fatigue properties of Ti-Ni shape memory alloy wires were investigated. In Ni-rich Ti-Ni shape memory alloys, $Ti_3Ni_4$ precipitates formed by aging treatments are believed to vary the shape memory and mechanical properties. In this study, the effect of aging temperature and aging time on shape memory properties and fatigue life were investigated using Ti-50.9 at% Ni alloy wires. The specimens were solution-treated at 1073 K for 3.6 ks followed by aging at 573 K, 673 K and 773 K for periods between 3.6 ks and 3600 ks. It was found that the fatigue life under a constant stress decreased with increasing aging temperature. When the specimens were aged at 573 K for periods between 36 ks and 360 ks, superior shape memory and fatigue properties were obtained. The fatigue life also decreased when the test temperature and strain amplitude increased. It was concluded that the fatigue life exhibited a linear relationship with the critical stress for slip.
Keywords
Aging; Shape memory alloys; Fatigue; $Ti_3Ni_4$ precipitate;
Citations & Related Records
연도 인용수 순위
  • Reference
1 T. Suburi, A. Nenno and T. Fukuda : J. Less-common Met., 125 (1986) 157   DOI   ScienceOn
2 M. Nishida, C. M. Wayman, R. Kainuma and T. Honma : Scripta. Metal, 20 (1986) 899   DOI   ScienceOn
3 T. Tadaki, Y. Nakata, K. Shimizu and K. Otsuka : Japan Inst. Metals, 27 (1986) 731   DOI
4 C. M. Hwang and C. M. Wayman : Scripta. Metall., 17 (1983) 1449-1453   DOI   ScienceOn
5 Y. S. Kim and S. Miyazaki : Proceeding of International Conference on Shape Memory and Superelastic Technologies (SMST-97), Pacific Grove, California, (1997) 473
6 F. Laves and H. J. Wallbaum : Z. Krist., 101 (1939) 78
7 J. L. McNichols Jr, P. C. Brookes, and J. S. Cory : J. Appl. Phys., 52 (1981) 7442   DOI   ScienceOn
8 M. Nishida and C. M. Wayman : Metall. Trans., 18A (1987) 785-799
9 T. Hara, T. Ohba, K. Otsuka and M. Nishida : Mater. Trans. JIM, 38 (1997) 277-284   DOI
10 S. Miyazaki, Y. Ohmi, K. Otsuka, and Y. Suzuki : J de Phys 43 (1982) (suppl.12): C4-255-260   DOI
11 S. Miyazaki, In: T.W. Duerig et al., editors. Engineering Aspects of Shape Memory Alloys. Butterworth-Heinenmann (1990) 394-413
12 H. C. Lin and S. K. Wu : Acta Metall. Mater., 42 (1994) 1623-1630   DOI   ScienceOn
13 D. Wurzel: Mater. Sci. and Eng., A 273-275 (1999) 643-638
14 S. Miyazaki and K. Otsuka : Metall. Trans. A., 17A (1986) 53-63
15 Miyazaki, I. Shiota, K. Otsuka, H. Tamura. MRS Int'l. Mtg. on Adv. Mats., 9 (1989) 153-156
16 J. I. Kim and S. Miyazaki : Acta. Mater., 53 (2005) 4545-4554   DOI   ScienceOn
17 T. H. Nam, T. Saburi and K. Shimizu : Mater. Trans. JIM, 31 (1990) 959   DOI
18 C. M. Hwang, M. Meichle, M. B. Salamon, C. M. Wayman : Phil. Mag. A, 47 (1983) 9-30   DOI   ScienceOn
19 H. Tobushi, E H. Lin, A. Ikai, and S. Yamada : Trans. Jpn. Soc. Mech. Eng., 61 (1995) 2355   DOI