Structure development in Co.sub.38./sub.Ni.sub.33./sub.Al.sub.29./sub. ferromagnetic shape memory alloy

Kopeček, Jaromír; Sedláková, Silvia; Jurek, Karel; Jarošová, Markéta; Drahokoupil, Jan; Šittner, Petr; Novák, Vít

Number of the records: 1

Structure development in Co.sub.38./sub.Ni.sub.33./sub.Al.sub.29./sub. ferromagnetic shape memory alloy

1.

SYSNO ASEP	0331332
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Structure development in Co₃₈Ni₃₃Al₂₉ ferromagnetic shape memory alloy
Title	Vývoj struktury ve feromagnetické slitině s tvarovou pamětí Co₃₈Ni₃₃Al₂₉.
Author(s)	Kopeček, Jaromír (FZU-D)_{RID, ORCID} Sedláková, Silvia (FZU-D)_{RID, ORCID} Jurek, Karel (FZU-D)_{RID, ORCID, SAI} Jarošová, Markéta (FZU-D)_{RID, ORCID} Drahokoupil, Jan (FZU-D)_{RID, ORCID} Šittner, Petr (FZU-D)_{RID, ORCID} Novák, Vít (FZU-D)_{RID, ORCID}
Source Title	ESOMAT 2009 - 8th European Symposium on Martensitic Transformations. - Les Ulis cedex A : EDP Sciences, 2009 / Šittner P. ; Paidar V. ; Heller L. ; Seiner H. - ISBN 978-2-7598-0480-1
Pages	02013/1-02013/5
Number of pages	5 s.
Action	ESOMAT 2009
Event date	07.09.2009-11.09.2009
VEvent location	Praha
Country	CZ - Czech Republic
Event type	WRD
Language	eng - English
Country	FR - France
Keywords	cobalt alloys ; ferromagnetic shape memory alloys ; crystal growth ; martensitic transformation
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	IAA200100627 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	IAA200100902 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z10100520 - FZU-D (2005-2011)
Annotation	In the present study, a set of the directionally solidified samples from ferromagnetic shape memory alloywith the nominal composition Co38Ni33Al29 was prepared using the Bridgman method. It is shown that various growth rates result in various solidification structures of the crystals, mainly in different ratios of the disordered phase  - cobalt solid solution and the ordered phase  - B2 (Co,Ni)Al. This ratio has the fundamental effect on the temperature of the martensitic phase transition. The results are compared with the structure of samples prepared by the floating zone method. The structures of samples prepared with the different growth rate were studied by metallography, SEM, EDX, and EBSD methods. The samples without high-angle grain boundaries were cut from the prepared crystals for the mechanical testing.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2010

Number of the records: 1