Glassy, Amorphous and Nano-Crystalline Materials

0354529 - FZÚ 2011 RIV NL eng M - Monography Chapter
Šittner, Petr - Pilch, Jan - Malard, B. - Delville, R. - Curfs, C.
In-situ investigation of the fast lattice recovery during electropulse treatment of heavily cold drawn nanocrystalline Ni-Ti wires.
Glassy, Amorphous and Nano-Crystalline Materials. Berlin Heidelberg: Springer-Verlag, 2011 - (Šesták, J.; Hubík, P.; Mareš, J.), s. 245-260. Hot Topics in Thermal Analysis and Calorimetry, 8. ISBN 978-90-481-2881-5
R&D Projects: GA ČR GAP108/10/1296; GA AV ČR(CZ) IAA200100627
Institutional research plan: CEZ:AV0Z10100520
Keywords : NiTi * recovery * shape memory alloy * joule heating * superelasticity * martensitic transformation
Subject RIV: BM - Solid Matter Physics ; Magnetism
http://www.springerlink.com/content/978-90-481-2881-5#section=800372&page=1&locus=1

Superelastic functional properties of Ni-Ti wires can be precisely set by the recently developed nonconventional electropulse treatment. In order to learn about the lattice recovery processes responsible for that, variations of tensile force, electrical resistance and synchrotron X-ray diffraction signal from 0.1 mm thin as-drawn Ni-Ti wire prestrained in tension were recorded simultaneously during the short time electric pulse treatment. The data were used to obtain direct experimental information on the phase fractions, internal stresses and defects in the microstructure fast evolving in response to the prescribed temperature and tensile stress in the treated wire.
Permanent Link: http://hdl.handle.net/11104/0193511