The first part of this paper reports a one-dimensional model, proposed for simulating the microstructural evolution of phase transforming thin wires in uniaxial constrained recovery conditions. The model can explain the shift to higher transformation temperatures observed in experiments on shape memory wires. The effect of increasing the pre-straining on the evolution of the recovery stress and on the martensite volume fraction can also be captured. In the second part of the paper, we report a work that is still in progress, in which we apply the model in order to study a composite with shape memory wires. The model is able to qualitatively reproduce the deformation of a prototype realised in the Laboratory of Metallurgy of the Department of Engineering at the University of Ferrara.
Modelling the constrained recovery in shape memory wires
MERLIN, Mattia;RIZZONI, Raffaella
2009
Abstract
The first part of this paper reports a one-dimensional model, proposed for simulating the microstructural evolution of phase transforming thin wires in uniaxial constrained recovery conditions. The model can explain the shift to higher transformation temperatures observed in experiments on shape memory wires. The effect of increasing the pre-straining on the evolution of the recovery stress and on the martensite volume fraction can also be captured. In the second part of the paper, we report a work that is still in progress, in which we apply the model in order to study a composite with shape memory wires. The model is able to qualitatively reproduce the deformation of a prototype realised in the Laboratory of Metallurgy of the Department of Engineering at the University of Ferrara.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
