The pseudoelasticity and the shape memory effect in CoNiAl alloys

0391291 - FZÚ 2014 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Kopeček, Jaromír - Jarošová, Markéta - Jurek, Karel - Heczko, Oleg
The pseudoelasticity and the shape memory effect in CoNiAl alloys.
Conference Proceedings National Conference on Heat Treatment with International Participations /24./. Čerčany: Asociace pro tepelné zpracování kovů, ECOSOND s.r.o, 2012, s. 372-380. ISBN 978-80-904462-5-0.
[National Conference on Heat Treatment with International Participations /24./. Jihlava (CZ), 27.11.2012-29.11.2012]
Grant CEP: GA ČR(CZ) GA101/09/0702; GA ČR GAP107/10/0824; GA ČR(CZ) GAP107/11/0391; GA AV ČR IAA100100920
Institucionální podpora: RVO:68378271
Klíčová slova: shape memory alloys * scanning electron microscopy * metallography * martensite
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus

The cobalt alloys (close to the CoNiAl stoichiometry) are the less known shape memory alloys. Such behavior is consequence of the martensitic transformation. The pseudoelasticity is caused by the stress-induced martensitic transformation above the equilibrium martensite start temperature from high temperature cubic phase (austenite) to lower symmetry phase(martensite). In CoNiAl the pseudoelastic behavior can be obtained by the high temperature annealing. In presented work the effect of the annealing temperature on both pseudoelastic behavior and microstructure was investigated.
Trvalý link: http://hdl.handle.net/11104/0220390