Magnetically controlled shape memory effect in Ni2MnGa intermetallics

Magnetically controlled shape memory effect in Ni2MnGa intermetallics

When magnetically-controlled shape memory (MSM) materials are subjected to an external magnetic field, twins of a favorable orientation relative to the magnetic field direction grow at the expense of other twins. It is presently shown that the twin structure of martensite in the MSM composition Ni2M...

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Veröffentlicht in:Scripta materialia 1997-05, Vol.36 (10), p.1133-1138
Hauptverfasser: ULLAKKO, K, HUANG, J. K, KOKORIN, V. V, O'HANDLEY, R. C
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Martensitic transformations
Materials science
Metals. Metallurgy
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
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Zusammenfassung:When magnetically-controlled shape memory (MSM) materials are subjected to an external magnetic field, twins of a favorable orientation relative to the magnetic field direction grow at the expense of other twins. It is presently shown that the twin structure of martensite in the MSM composition Ni2MnGa can be reoriented magnetically; the resulting magnetically-driven strain is believed to be the largest such in non-REE-based alloys. (AIAA)
ISSN:1359-6462
1872-8456
DOI:10.1016/s1359-6462(96)00483-6