Document Type : Research Paper


Materials Engineering Department, University of Technology, Baghdad, Iraq,


This study examines the effect of Sn additions on Cu-14%Al-4.5%Ni shape memory alloy. Sn was added in three different percentages (0.3,1,3) %. The alloys were mechanically tested both in compression test and micro hardness test. Also, a thermo-mechanical test was performed on the alloys. Results showed an increase in the transformation temperature outside the domain and also a better recovery strain with the increase of Sn percentage of 3% Sn addition showed the best results in mechanical properties while the 3% Sn showed a better Shape Memory Properties near to super elastic.


[1] C. L'excellent, “Shape Memory Alloy Handbook “John Wiley and Son, 2nd ed., New York, USA, 2013.
[2] D. Lagudas, “Shape Memory Alloy: Engineering Modeling” Springer, end ed., Berlin, Germany, 2010.
[3] J. W. Kim, D. W. Ro, E. S. Lee, and Y. G. Kim, " Effects on Microstructure and Tensile Properties of a Zirconium Addition to a Cu-AI-Ni Shape Memory Alloy", Metallurgical transaction A, Vol.21A, No.11, pp.741-744, 1990.
[4] J. M. Jani , M. Leary, and A. Sibic, “A review of Shape memory alloy research applications and opportunities”, Materials and Design, Vol. 6, No. 3, pp.1078-1133, 2014.
[5] J. Van Humbeeck, "Non-medical application of shape memory alloys", Material Science and Engineering, Vol. 273, No. 275, pp. 134-148, 1999.
[6] M. K. Abbass, M. M. Rahdi, and R. S. A. Adnan, “The effect of Germanium Addition on mechanical Properties and microstructure of Cu-Al-Ni Shape Memory Alloy”, Materials Today: Proceedings, Vol. 4, No. 10, pp. 224–233, 2017.
[7] M. K. Abbass, M. M. Rahdi, and R. S. Ahmed Adnan, “The effect of Tellurium Addition on mechanical Properties and microstructure of Cu-Al-Ni Shape Memory Alloy”, International Journal of Advances in Science, Engineering and Technology (IJASEAT), 4, 2, pp. 161-164, 2016.
[8] S. N. Saud, E. Hamzah, T. Abubakar, and R. S. Hosseinian, “A Review on Influence of Alloying Elements on the Microstructure and Mechanical Properties of Cu-Al-Ni Shape Memory Alloys”, Journal Technology (Sciences & Engineering), Vol.b64, No. 1, pp. 51–56, 2013.
[9] S. N. Saud, E. Hamzaha. T. Abubakar, M. Ibrahim K., and Bahador Abdullah, “Effect of a fourth alloying element on the microstructure and mechanical properties of Cu–Al–Ni shape memory alloys”, Journal of Materials,Vol. 30, No. 14, pp. 2285-2269, 2015.
[10] R. S. Ahmed Adnan and M. M. Abudlbaki, “Effect of Sn Addition on Transformation Temperature and Thermal Properties for Cu-Al-Si Shape Memory Alloy”, IOP Conf. Ser.: Mater. Sci. Eng. 454, 1, 012050, 2018.
[11] G. A. L´opez, M. Barrado, J. M. San Juan, and M. L. N´o, “Interaction of Cu–Al–Ni shape memory alloys particles with molten In and In + Sn matrices”, Materials Science and Engineering A, Vol. 495, No. 1 , pp. 304–309, 2008.
[12] U. Sari, “Influences of 2.5wt.% Mn addition on the microstructure and mechanical properties of Cu-Al-Ni shape memory alloys”, International Journal of Minerals, No.17, pp. 2-14, 2010.