Functional Performances of CuZnAl Shape Memory Alloy Open-Cell Foams

Journal Article · Sun Apr 15 04:00:00 EDT 2018 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1007/S11665-018-3152-X· OSTI ID:22860604

Casati, R. ^[1]; Bassani, P.; Tuissi, A. ^[2]

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1. Politecnico di Milano, Department of Mechanical Engineering (Italy)
2. CNR ICMATE, Unit of Lecco, Institute of Condensed Matter Chemistry and Technologies for Energy, National Research Council (Italy)

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.

• OSTI ID: 22860604
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 4 Vol. 27; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BRASS
CALORIMETRY
COMPARATIVE EVALUATIONS
COPPER COMPOUNDS
MARTENSITIC STEELS
PHASE TRANSFORMATIONS
PLASTICITY
SHAPE MEMORY EFFECT
TERNARY ALLOY SYSTEMS
THERMAL ANALYSIS
ZINC COMPOUNDS