Abstract
Shape memory effect is a peculiar property exhibited by a series of alloy systems. This property is characterized by the recoverability of desired shape of the material at different conditions, and these alloys take place in a class of smart materials due to this property. Shape memory effect is based on martensitic transformation, which is a solid state phase transition and occurs on cooling the material from high temperature parent phase region. Martensitic transformations are first order diffusionless transitions and governed by changes in the crystal structure of the material at angstrom level. Copper based alloys exhibit this property in metastable β-phase field, which have bcc- structures at high temperature. These alloys undergo two ordered transitions on cooling, and bcc structures turn into B2 (CsCl) or DO3 (Fe3Al) -type ordered structures. These ordered structures martensiticaly undergo the non-conventional complex layered structures on further cooling. The product phase has the unusual complex structures called long period layered structures such as 3R, 9R or 18R depending on the stacking sequences on the close-packed planes of the ordered lattice.
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References
Adiguzel O (2007) Smart materials and the influence of atom sizes on martensite microstructures in copper-based shape memory alloys. J Mater Process Technol 185:120–124
Zhu JJ, Liew KM (2003) Description of deformation in shape memory alloys from DO3 Austenite to 18R Martensite by group theory. Acta Mater 51:2443–2456
Ma J, Karaman I, Noebe RD (2010) High temperature shape memory alloys. Int Mater Rev 55:257–315
Sun L et al (2012) Stimulus-responsive shape memory materials: a review. Mater Des 33:577–640
Sutou Y et al (2005) Effect of grain size and texture on pseudoelasticity in Cu-Al-Mn-based shape memory wire. Acta Mater 53:4121–4133
Pelegrina JL, Romero R (2000) Calorimetry in Cu–Zn–Al alloys under different structural and microstructural conditions. Mater Sci Eng A 282:16–22
Adiguzel O (2012) Martensitic transformation and microstructural characteristics in copper based shape memory alloys. Key Eng Mater 510–511:105–110
Li Z, Gong S, Wang MP (2008) Macroscopic shape change of Cu13Zn15Al shape memory alloy on successive heating. J Alloys Compd 452:307–311
Malarriaa J, Lovey FC, Sade M (2009) Two way shape memory effect in CuZnAl single crystals after pseudoelastic cycling at low temperatures. Mater Sci Eng A 517:118–124
de Castro F, Sade M, Lovey F (2012) Improvements in the mechanical properties of the 18R \(\leftrightarrow \) 6R high-hysteresis martensitic transformation by nanoprecipitates in CuZnAl alloys. Mater Sci Eng A 543:88–95
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Adiguzel, O. (2016). Thermal Memory and Thermal Induced Phase Transformation in Shape Memory Alloys. In: Bonča, J., Kruchinin, S. (eds) Nanomaterials for Security. NATO Science for Peace and Security Series A: Chemistry and Biology. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-7593-9_11
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DOI: https://doi.org/10.1007/978-94-017-7593-9_11
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