“Mechanical properties of martensitic Cu–Zn–Al foams in the pseudoelastic regime”

G. BERTOLINO, P. ARNEODO LAROCHETTE, E.M. CASTRODEZA, C. MAPELLI, A. BARUJ, H.E. TROIANI

MATERIALS LETTERS

ELSEVIER SCIENCE BV

Año: 2010

0167-577X

The mechanical properties of martensitic Cu–Zn–Al foams produced through molten metal infiltration of a 22 leachable bed of silica gel were investigated. The novel porous shape memory alloy almost reversibly absorbs 23 compression deformations up to 4%. Intergranular fracture occurs in the material along the test, similar to 24 what is observed in polycrystalline solid samples. Despite its tendency to fracture at localized regions, the 25 material is highly resilient, being able to stand several compression cycles. The Cu–Zn–Al foams showed 26 excellent shape recovery after deformation (95%). This previous fact establishes it as a very promising 27 candidate for interesting applications. 28