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2015 | 128 | 4 | 754-757
Article title

Equivalence of Mechanical and Magnetic Force in Magnetic Shape Memory Effect

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Abstracts
EN
High mobility of twin boundary is crucial for magnetic shape memory effect. The twin boundary can be moved by applied magnetic field or mechanical stress. In Ni-Mn-Ga 10M martensite there are two different, field movable, a-c twin boundaries type I and II due to monoclinic lattice. For single twin boundary of both types we experimentally evaluated the equivalence of magnetic and mechanical force and the validity of generally used energy model using direct stress-strain and magnetization measurements. For type II, highly mobile twin boundary, the equivalence seems to be valid and model broadly agrees with measurement. However, for type I the calculated magnetic stress is much larger than mechanical stress needed for twin boundary motion.
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Contributors
author
  • Institute of Physics, ASCR, Na Slovance 2, 182 21 Prague, Czech Republic
author
  • Institute of Physics, ASCR, Na Slovance 2, 182 21 Prague, Czech Republic
author
  • Aalto University School of Engineering, Laboratory of Engineering Materials, PL 14200, FIN-00076 Aalto, Finland
author
  • Institute of Thermomechanics, ASCR, Dolejškova 5, 182 00 Prague, Czech Republic
author
  • Institute of Physics, ASCR, Na Slovance 2, 182 21 Prague, Czech Republic
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv128n468kz
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