Paper Title:
Stress-Induced Twin Boundary Motion in Particulate Ni-Mn-Ga /Polymer Composites
  Abstract

Composites of Ni–Mn–Ga particles in a polyurethane matrix can be made by mixing the particles with the polymer, and allowing them to cure under a magnetic field to texture the composites. These composites show large hysteresis and mechanical losses, when subjected to a cyclic stress, that were far larger than the matrix polymer ones. The additional losses are attributed to the motion of twin boundaries in the filler particles and provide a way for obtaining mechanical energy absorption in a wide frequency range. By means of X-ray and neutron diffraction we present evidence that confirms that twins are present in the particles and that they do move when mechanically loading the composite

  Info
Periodical
Edited by
V.A. Chernenko
Pages
197-212
DOI
10.4028/www.scientific.net/MSF.583.197
Citation
J. Feuchtwanger, M. L. Richard, P. Lázpita, J. Gutiérrez, J. M. Barandiarán, S. M. Allen, R. C. O'Handley, "Stress-Induced Twin Boundary Motion in Particulate Ni-Mn-Ga /Polymer Composites ", Materials Science Forum, Vol. 583, pp. 197-212, 2008
Online since
May 2008
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