Abstract
In this study, the transformation temperatures and shape memory effect of Cu–Al–Mn shape memory alloys were investigated by calorimetric measurements. Cu–Al–Mn alloys in the range of 10–15 wt% of aluminum and 0–10 wt% of manganese; exhibiting β-phase at high temperatures, were prepared. With an increase in the aluminum and manganese concentrations of the alloy, the martensite morphology is modified and the transformation temperatures are decreased. The activation energies of the alloys were calculated according to the Ozawa and Kissinger methods. Magnetic properties of the alloys were studied and it was seen that the alloys show low magnetization. The microstructures of the alloys were investigated by optical micrographs where the martensite variants with different orientations can be observed from the micrographs.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Hsu, C.A., Wang, W.H., Hsu, Y.F., Rehbach, W.P.: The refinement treatment of martensite in Cu-11.38 wt% Al-0.43 wt. Be shape memory alloys. J. Alloys Compd. 474, 455–462 (2009)
Malik, U.S., Sampath, V.: Influence of aluminum and manganese concentration on the shape memory characteristics of Cu–Al–Mn shape memory alloys. J. Alloys Compd. 459, 142–147 (2008)
Montecinos, S., Cuniberti, A., Sepulveda, A.: Grain size and pseudoelastic behaviour of a Cu–Al–Be alloy. Mater. Charact. 59, 117–123 (2008)
Song, G., Ma, N., Li, H.-N.: Applications of shape memory alloys in civil structures. Eng. Struct. 28, 1266–1274 (2006)
Lu, X., Chen, F., Li, W., Zhen, Y.: Effect of Ce addition on the microstructure and damping properties of Cu–Al–Mn shape memory alloys. J. Alloys Compd. 480(2), 608–611 (2009)
Mielczarek, A., Kopp, N., Riehemann, W.: Ageing effects after heat treatment in Cu–Al–Mn shape memory alloys. Mater. Sci. Eng. A 521–522, 182–185 (2009)
Sutou, Y., Kainuma, R., Ishida, K.: Effect of alloying elements on the shape memory properties of ductile Cu–Al–Mn Alloys. Mater. Sci. Eng. A 273–275, 375–3379 (1999)
Malik, U.S., Sampath, V.: Effect of slloying on microstructure and shape memory characteristics of Cu–Al–Mn shape memory alloys. Mater. Sci. Eng. A 481–482, 680–683 (2008)
Kissinger, H.E.: Reaction kinetics in differential thermal analysis. Anal. Chem. 29(11), 1702–1706 (1957)
Ozawa, T.: Kinetic analysis of derivative curves in thermal analysis. J. Therm. Anal. 2(3), 321–324 (1970)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Aksu Canbay, C., Aydoğdu, A. & Aydoğdu, Y. The Investigation of Thermal and Magnetic Properties and Microstructure Analysis of Cu–Al–Mn Shape Memory Alloys. J Supercond Nov Magn 24, 871–877 (2011). https://doi.org/10.1007/s10948-010-1034-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10948-010-1034-z