Structural and Morphological Investigations on Shape Memory CuZnAl Alloys

Non-generic concentrations for shape-memory alloys; the case of CuZnAl

As is well known, the remarkable properties of many active crystalline materials, such as shape-memory alloys, originate from a symmetry-breaking martensitic phase transformation. A recent analysis (see [1]) has shown that if a special condition on the strain parameters is satisfied, the twinning ability of a crystal undergoing a cubic-to-monoclinic transformation is considerably increased. As ...

Iron Based Shape Memory Alloys: Mechanical and Structural Properties

Shape Memory Alloys

THE TERM SHAPE MEMORY ALLOYS (SMA) is applied to that group of metallic materials that demonstrate the ability to return to some previously defined shape or size when subjected to the appropriate thermal procedure. Generally, these materials can be plastically deformed at some relatively low temperature, and upon exposure to some higher temperature will return to their shape prior to the deform...

Applications of Shape Memory Alloys in Structural Engineering

Costantino Menna, Ferdinando Auricchio, Domenico Asprone Dipartimento di Strutture per l’Ingegneria e l’Architettura (Dist), Universit!a degli Studi di Napoli Federico II, Naples, Italy; Dipartimento di Ingegneria Civile e Architettura (DICAr), Universit!a degli Studi di Pavia, Pavia, Italy; Center for Advanced Numerical Simulation (CeSNA), Istituto Universitario di Studi Superiori (IUSS), Pavi...

On the Desing and Test of a Prototype of Biped Actuated by Shape Memory Alloys

In this paper the design of a biped robot actuated with Shape Memory Alloy (SMA) springs with minimum degrees of freedom is presented. SMA springs are a class of smart materials that are known for their high power to mass and volume ratios. It was shown that utilizing spring type of SMAs have many advantages as large deformation, smooth motion, silent and clean movement compared to ordinary typ...