Effects of Ni/Ti Ratio and Heat-Treatment on Transformation Temperature, Mechanical Properties and Shape Recovery Strain of Ni-Ti-Nb Alloy

Abstract:

Ni-Ti-Nb wide hysteresis shape memory alloys of three Ni/Ti ratio components were manufactured by vacuum induction melting. The transformation temperature, mechanical properties and recovery strain were studied by using differential scanning calorimeter and material testing machine. It shows that with Ni/Ti ratio increase, the transformation temperature and mechanical properties decrease. Shape recovery strain is higher when Ni/Ti ratio is 1.068, with recovery strain range from 6.8 to 7.5. The faster the cooling rate after annealing, the higher is the transformation temperature, and the lower are the mechanical properties and recovery strain.

• Periodical: Advanced Materials Research (Volumes 535-537)
• Pages: 919-923
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.535-537.919
• Online since: June 2012
• Authors: Zhao Wei Feng, Jiang Bo Wang, Xu Jun Mi, Wei Dong Miao, Zhi Shan Yuan, Jin Zhou
• Keywords: Mechanical Property, Ni/Ti Ratio, Ni-Ti-Nb Shape Memory Alloy, Recovery Strain, Transformation Temperature

References

[1] J. V. Humbeeck: Mater. Sci. Eng. A Vol. A273-275 (1999), p.134

[2] T. Duerig, A. Pelton and D. StÖckel: Mater. Sci. Eng. A Vol. A273–275 (1999), p.149

[3] Zhirong He, Jingen Zhou and S. Miyazaki: Acta Metall Sin Vol. 39(6) (2003), p.617 (In Chinese)

[4] Zhirong He, Fang Wang and Jingen Zhou: Heat Treat. Met. Vol. 31(9) (2006), p.17 (In Chinese)

[5] J. I. Kim, Y. Liu and S. Miyazaki: Acta Mater. Vol. 52 ( 2004), p.487

[6] X. Huang and Y. Liu: Scripta Mater. Vol. 45 (2001), p.153

[7] Guanjun Yang and Ju Deng: Rare Met Mater Eng Vol. 27(6) (1998), p.322 (In Chinese)

[8] Ying Yan, Wei Jin and Shaoyu Qiu. Chinese Journal of Materials Research Vol.18(2) (2004), p.199 (In Chinese）

[9] Yufeng Zheng, Wei Cai, Yongqian Wang, Yichun Luo and Liancheng Zhao: J. Mater. Sci. Technol. Vol. 14 (1998), p.37

[10] Huachu Li, Baodong Gao, Jiangbo Wang, Zhaowei Feng and Xujun Mi: Rare Metals Vol. 28(4) (2004), p.794 (In Chinese)

[11] X. M. He, L. J. Rong, D. S. Yan and Y. Y. Li. Mater.Sci.Eng.A Vol.371 (2004), p.193

[12] N. N. Popov, S. D. Prokoshkin, M. Y. Sidorkin, T.I. Sysoeva, D.V. Borovkov, A.A. Aushev, I.V. Kostylev and A. E. Gusarov: Russ. Metall. (Metally) Vol.1 (2007), p.59

DOI: 10.1134/s0036029507010119

[13] K. Uchida, N. Shigenaka, T. Sakuma, Y. Sutou and K. Yamauchi: Mater. Trans. Vol.48(3) (2007), p.445

[14] Yazhuo Yang, Xinqing Zhao, Lingjie Meng, Shanglin Yang and Huibin Xu. Acta Metall. Sin. Vol.41(6) (2005), p.627 (In Chinese)

[15] Xiangming He, Lijian Rong, Desheng Yan, Zhimin Jiang and Yiyi Li: Metall. Mater. Trans. A. Vol.35A (2004), p.2783

[16] X. M. He and L. J. Rong: Metals and Materials International, Vol.12(4) (2006), p.279

[17] K. Otsuka and X. Ren: Prog. Mater. Sci. Vol.50 (2005), p.511