The pseudoelasticity and the shape memory effect in CoNiAl alloys

0391291 - FZÚ 2014 RIV CZ eng C - Conference Paper (international conference)
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]
R&D Projects: GA ČR(CZ) GA101/09/0702; GA ČR GAP107/10/0824; GA ČR(CZ) GAP107/11/0391; GA AV ČR IAA100100920
Institutional support: RVO:68378271
Keywords : shape memory alloys * scanning electron microscopy * metallography * martensite
Subject RIV: BM - Solid Matter Physics ; Magnetism

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.
Permanent Link: http://hdl.handle.net/11104/0220390