Open Access
Article Number 05024
Number of page(s) 7
Section Applied Research and Applications: Engineering Materials with MT
Published online 01 September 2009
ESOMAT 2009, 05024 (2009)
DOI: 10.1051/esomat/200905024

Final thermomechanical treatment of thin NiTi filaments for textile applications by electric current

J. Pilch, L. Heller and P. Sittner

Institute of Physics of the ASCR, Prague, Czech Republic

Published online: 1 September 2009

Functional properties of NiTi filaments can be in a large extent controlled by the heat treatment after final cold drawing. Conventionally, this is being performed by straight annealing in long tubular electrical furnace by SMA providers. An alternative heat treatment method by Joule heating called Final Thermomechanical Treatment by Electric Current /FTMT-EC/ is presented in this work. Results of key experiments performed while developing the method are discussed in this paper. A prototype of a compact device for FTMT-EC treatment of continuous NiTi filaments is presented and differences compared to the conventional heat treatment in a furnace are discussed.

© Owned by the authors, published by EDP Sciences 2009