Journal of Materials Engineering and Performance

, Volume 27, Issue 4, pp 1706–1713 | Cite as

Functional Performances of CuZnAl Shape Memory Alloy Open-Cell Foams

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Abstract

Shape memory alloys (SMAs) with cellular structure offer a unique mixture of thermo-physical–mechanical properties. These characteristics can be tuned by changing the pore size and make the shape memory metallic foams very attractive for developing new devices for structural and functional applications. In this work, CuZnAl SMA foams were produced through the liquid infiltration of space holder method. In comparison, a conventional CuZn brass alloy was foamed trough the same method. Functional performances were studied on both bulk and foamed SMA specimens. Calorimetric response shows similar martensitic transformation (MT) below 0 °C. Compressive response of CuZnAl revealed that mechanical behavior is strongly affected by sample morphology and that damping capacity of metallic foam is increased above the MT temperatures. The shape memory effect was detected in the CuZnAl foams. The conventional brass shows a compressive response similar to that of the martensitic CuZnAl, in which plastic deformation accumulation occurs up to the cellular structure densification after few thermal cycles.

Keywords

advanced characterization non-ferrous metals thermal analysis 

Notes

Acknowledgments

The authors wish to thank Mr. Marco Pini, Mr. Nicola Bennato and Eng. Andrea Panzeri for their support in the experiments. This work was development in the framework of “Matec” project.

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Copyright information

© ASM International 2018

Authors and Affiliations

  • C. A. Biffi
    • 1
  • R. Casati
    • 2
  • P. Bassani
    • 1
  • A. Tuissi
    • 1
  1. 1.Unit of Lecco, Institute of Condensed Matter Chemistry and Technologies for Energy, National Research CouncilCNR ICMATELeccoItaly
  2. 2.Department of Mechanical EngineeringPolitecnico di MilanoMilanItaly

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