Research ArticleOpen AccessGoogle Scholar indexed
Microstructure and Shape Memory Effect of Cu-Zn-Ni Shape Memory Alloys
Department of Mechanical Engineering, Dr. Ambedkar Institute of Technology, Bangalore, India
Department of Mechanical Engineering, Siddaganga Institute of Technology, Tumkur, India
Department of Mechanical Engineering, Dr. Ambedkar Institute of Technology, Bangalore, India
- 1 Department of Mechanical Engineering, Dr. Ambedkar Institute of Technology, Bangalore, India
- 2 Department of Mechanical Engineering, Siddaganga Institute of Technology, Tumkur, India
- 3 Department of Mechanical Engineering, Dr. Ambedkar Institute of Technology, Bangalore, India
Journal of Minerals and Materials Characterization and Engineering·Volume 02 (2014)·Pages 71–77·Published 14 March 2014·DOI10.4236/jmmce.2014.22011
Copy link · social · email
Abstract
The microstructure, martensitic transformation behavior and shape memory effect of Cu-Zn-Ni shape memory alloy have been studied by X-ray diffraction (XRD), optical microscopy (OM) and differential scanning calorimetry (DSC). The results show that the recrystallization occurs in the hot-rolled Cu-Zn-Ni alloy by annealing at 800℃ and alloy is primarily composed of martensite. A reverse martensite transformation temperature higher than 100℃ upon heating has been detected. The alloys exhibit good ductility and shape memory effect (SME). The results obtained are discussed in detail.
KeywordsCu-Zn-Ni Shape Memory AlloyTransformation TemperatureX-Ray DiffractionOptical
- Duerig, T.W., Melton, K.N., Stockel, D. and Wayman, C.M. (1990) Engineering Aspects of Shape Memory Alloys. Butterworth Heinemann Publishing, London, 3-20.
- Sutou, Y., Omori, T., Kainuma, R., Ono, N. and Ishida, K. (2002) Enhancement of Superelasticity in Cu-Al-Mn-Ni Shape Memory Alloys by Texture Control. Metallurgical and Materials Transactions A, 33A, 2817-2824.
- Ahlers, M. (2008) The Martensitic Transformation in the Cu-Zn Based Shape Memory Alloys as a Tool for the Evaluation of Transformation Mechanisms and Phase Stabilities. Materials Science and Engineering A, 481-482, 500-503. http://dx.doi.org/10.1016/j.msea.2007.02.136
- Kainuma, R., Takahashi, S. and Ishida, K. (1996) Thermoelastic Martensite and Shape Memory Effect in Ductile Cu-Al-Mn Alloys. Metallurgical and Materials Transactions A, 27A, 2187-2195.
- Kainuma, R., Satoh, N., Liu, X.J., Ohnuma, I. and Ishida, K. (1998) Phase Equilibria and Heusler Phase Stability in Cu-Rich Portion of the Cu-Al-Mn System. Journal of Alloys and Compounds, 266, 191-200. http://dx.doi.org/10.1016/S0925-8388(97)00425-8
- Mallik U.S. and Sampath, V. (2008) Influence of Aluminum and Manganese Concentration on the Shape Memory Characteristics of Cu-Al-Mn Shape Memory Alloys. Journal of Alloys and Compounds, 459, 142-147. http://dx.doi.org/10.1016/j.jallcom.2007.04.254
- Mallik, U.S. and Sampath, V. (2008) Effect of Composition and Ageing on Damping Characteristics of Cu-Al-Mn Shape Memory Alloys. Materials Science and Engineering A, 478, 48-55. http://dx.doi.org/10.1016/j.msea.2007.05.073
- Sutou, Y., Kainuma, R. and Ishida, K. (1999) Effect of Alloying Elements on the Shape Memory Properties of Ductile Cu-Al-Mn Alloys. Materials Science and Engineering A, 273, 375-379. http://dx.doi.org/10.1016/S0921-5093(99)00301-9
- ASM (1992) ASM Handbook Volume 03: Alloy Phase Diagrams. 10th Edition, ASM International, Almere.
- Mallik, U.S. and Sampath, V. (2006) Influence of Composition on Shape Memory Characteristics of Cu-Al-Mn Shape Memory Alloys. Proceedings of International Conference on Advances in Materials and Materials Processing (ICAMMP-2006), Kharagpur, 3-5 February 2006, 583-588.
- Lopez del Castillo, C., Blazquez, M.L., Gomez, C., Mellor, B.G., de Diego, N. and del Rio, J. (1988) The Stabilization of Martensite in Cu-Al-Mn Alloys. Journal of Materials Science, 23, 3379-3382. http://dx.doi.org/10.1007/BF00551322