Structural transformations in ferromagnetic shape memory alloy Co.sub.38./sub.Ni.sub.33./sub.Al.sub.29./sub..

0359532 - FZÚ 2012 CZ eng A - Abstract
Kopeček, Jaromír - Jarošová, Markéta - Jurek, Karel - Bodnárová, Lucie - Landa, Michal - Majtás, Dušan - Drahokoupil, Jan - Heczko, Oleg
Structural transformations in ferromagnetic shape memory alloy Co₃₈Ni₃₃Al₂₉.
10-th International Symposium on Ferroic Domains and Micro- to Nanoscopic Structures. Book of Abstracts and Programme. Prague: IoP AS CR, 2010 - (Hlinka, J.; Bubnov, A.; Pokorný, J.). s. 59. ISBN N.
[ISFD -10. International Symposium on Ferroic Domains and Micro- to Nanoscopic Structures /10./. 20.09.2010-24.09.2010, Prague]
R&D Projects: GA ČR(CZ) GA101/09/0702; GA ČR GAP107/10/0824
Institutional research plan: CEZ:AV0Z10100521; CEZ:AV0Z20760514
Keywords : shape memory alloys * martensite * cobalt * scanning electron microscopy * EBSD
Subject RIV: BM - Solid Matter Physics ; Magnetism

The cobalt-based shape memory alloys (SMA) are expected to be the new kind of so-called ferromagnetic SMAs. The structure of the investigated material Co38Ni33Al29 is composed of two phases – an B2 ordered matrix (Co,Ni)Al and a disordered face centred cubic cobalt solid solution, γ-phase. The B2 phase matrix undergoes martensitic transformation into the tetragonal L1_0 structure. The growth of two-phase unidirectional structures was described. The first results of the interaction between martensitic variants and non-transforming particles in the structure are presented.
Permanent Link: http://hdl.handle.net/11104/0197307