Cobalt-based ferromagnetic shape memory alloys

Kopeček, Jaromír; Jarošová, Markéta; Drahokoupil, Jan; Majtás, Dušan; Kratochvílová, Irena; Heczko, Oleg

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Cobalt-based ferromagnetic shape memory alloys

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SYSNO ASEP	0364034
Document Type	A - Abstract
R&D Document Type	The record was not marked in the RIV
R&D Document Type	Není vybrán druh dokumentu
Title	Cobalt-based ferromagnetic shape memory alloys
Author(s)	Kopeček, Jaromír (FZU-D)_{RID, ORCID} Jarošová, Markéta (FZU-D)_{RID, ORCID} Drahokoupil, Jan (FZU-D)_{RID, ORCID} Majtás, Dušan (FZU-D) Kratochvílová, Irena (FZU-D)_{RID, ORCID, SAI} Heczko, Oleg (FZU-D)_{RID, ORCID}
Source Title	The 16th International Conference on Crystal Growth (ICCG-16). - Beijing : Chinese Association for Crystal Growth, 2010 / Jiang M.H. ; Chen C.T. - ISBN N. GM2
Number of pages	1 s.
Action	International Conference on Crystal Growth /16./ (ICCG-16)
Event date	08.08.2010-13. 08.2010
VEvent location	Beijing
Country	CN - China
Event type	WRD
Language	eng - English
Country	CN - China
Keywords	shape memory alloys ; crystal growth ; SBSD method ; metallography
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	GA101/09/0702 GA ČR - Czech Science Foundation (CSF)
	GAP107/10/0824 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z10100520 - FZU-D (2005-2011)
Annotation	Magnetic shape memory effect is studied in the various Ni-Mn-Ga compounds mainly, but number of alloys combining martensitic and ferromagnetic transformation is higher. Among them Co-Ni-Al compounds have very interesting mechanical properties as high strengths and partially better resistance to cracking. Compare to Ni-Mn-Ga system the high-temperature state of Co-Ni-Al is complicated, there exist two phases: transformable, ordered (Co,Ni)Al and non-transformable precipitates of cubic cobalt solid solution. Other phase can be presented as well under selected condition. The preparation of the transformable “single-crystal” covers the preparation of single-crystalline matrix with the homogeneous fcc-cobalt precipitates distribution and subsequent annealing and quenching, which creates the metastable matrix state with nucleated precipitates arrays supporting the transformation under external stress.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2012

Number of the records: 1