J. Phys. IV France
Volume 112, October 2003
Page(s) 597 - 600

J. Phys. IV France
112 (2003) 597
DOI: 10.1051/jp4:2003956

Acoustic emission study of martensitic transition kinetics in Cu-based shape-memory alloys

F.J. Pérez-Reche, E. Vives, LI. Manosa and A. Planes

Departament d'Estructura i Constituents de la Matèria, Facultat de Fisica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona, Spain

In this paper we study the acoustic emission generated during the martensitic transition of Cu-based shape-memory alloys. We analyze the evolution of the acoustic emission activity on thermal cycling through the transition. A correlation function between the acoustic activity of consecutive cycles is proposed, which gives a quantitative estimation of the reproducibility of the transformation. The results enable the evolution of the kinetic (athermal/isothermal) character of the martensitic transition to be assessed in this alloy.

© EDP Sciences 2003