Pseudo-elastic (PE) materials are an important class of metallic alloy which exhibit unique features with respect to common engineering metals. Because of these unique properties, PEs are able to recover their original shape after high values of mechanical deformations, by removing the mechanical load (PE). From the microstructural point of view shape memory and pseudo-elastic effects are due to a reversible solid state microstructural diffusionless transitions from austenite to martensite, which can be activated by mechanical and/or thermal loads. Copper-based shape memory alloys are preferred for their good memory properties and low cost of production. This paper describes the main crack initiation and its propagation in an tensile test in order to evaluate crack path and its behaviour at low and at high values of deformation. Both grain boundary chemical properties and X-ray diffraction will be discussed in order to correlate structural transition involved in an Cu-Zn-Al alloy characterized by a PE behaviour.

Crack path in a Zn-Cu-Al PE alloy under uniaxial load / V., Di Cocco; F., Iacoviello; L., Tomassi; A., Rossi; Natali, Stefano; Volpe, Valerio. - ELETTRONICO. - 1(2013), pp. 255-261. ((Intervento presentato al convegno XXII Convegno Nazionale IGF tenutosi a Roma nel 1-3 Luglio.

Crack path in a Zn-Cu-Al PE alloy under uniaxial load

NATALI, Stefano;VOLPE, VALERIO
2013

Abstract

Pseudo-elastic (PE) materials are an important class of metallic alloy which exhibit unique features with respect to common engineering metals. Because of these unique properties, PEs are able to recover their original shape after high values of mechanical deformations, by removing the mechanical load (PE). From the microstructural point of view shape memory and pseudo-elastic effects are due to a reversible solid state microstructural diffusionless transitions from austenite to martensite, which can be activated by mechanical and/or thermal loads. Copper-based shape memory alloys are preferred for their good memory properties and low cost of production. This paper describes the main crack initiation and its propagation in an tensile test in order to evaluate crack path and its behaviour at low and at high values of deformation. Both grain boundary chemical properties and X-ray diffraction will be discussed in order to correlate structural transition involved in an Cu-Zn-Al alloy characterized by a PE behaviour.
9788895940472
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11573/518343
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact