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Structural changes in Co-based F-SMA
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SYSNO ASEP 0396494 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Structural changes in Co-based F-SMA Author(s) Kopeček, Jaromír (FZU-D) RID, ORCID
Kopecký, Vít (FZU-D) ORCID
Landa, Michal (UT-L) RID
Heczko, Oleg (FZU-D) RID, ORCIDSource Title European Symposium on Martensitic Transformations. - Zurich : Trans Tech Publications Ltd, 2013 / Prokoshkin S. ; Resnina N. - ISSN 0255-5476 Pages s. 416-420 Number of pages 5 s. Publication form Print - P Action European Symposium on Martensitic Transformations /9./ (ESOMAT 2012) Event date 09.09.2012-16.09.2012 VEvent location St Petersburg Country RU - Russian Federation Event type EUR Language eng - English Country CH - Switzerland Keywords cobalt alloys ; martensitic transformation ; metallography ; magnetic measurement ; shape memory alloy 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) GAP107/11/0391 GA ČR - Czech Science Foundation (CSF) Institutional support FZU-D - RVO:68378271 ; UT-L - RVO:61388998 UT WOS 000316089000075 EID SCOPUS 84874064880 DOI 10.4028/www.scientific.net/MSF.738-739.416 Annotation The Co38Ni33Al29 alloy as a potential ferromagnetic shape memory alloy was investigated. The method of preparation of the unidirectional solidified single-crystals from cast material is described. The high-temperature annealing and subsequent quenching was found to be necessary condition for martensitic transformation and the shape memory behavior. The martensitic transformation temperatures of annealed samples were about 200 K, while as-cast sample did not exhibit any sharp transformation. The transformation temperatures were determined from magnetic measurement. All martensitic structures observed locally by microscopic methods at room temperature are thus stress induced. These results agree with pseudoelastic behavior observed in annealed and quenched samples. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2014
Number of the records: 1