Reversible magnetic field-induced martensitic phase transformation is demonstrated for the first time in Ni2MnGa magnetic shape memory alloy single crystals under constant stress levels and low field magnitudes. Actuation stress levels larger than 25 MPa were achieved providing an order of magnitude increase with respect to the values obtained from field-induced martensite reorientation. The necessary magneto-thermo-mechanical conditions for the field-induced phase transformation are discussed.
|Number of pages||4|
|State||Published - Aug 2006|
Bibliographical noteFunding Information:
This work was supported by the National Science Foundation – Division of Materials Research, Contract No. 0244126, the US Civilian Research and Development Foundation, Grant No. RUE1-2690-TO-05, and the Deutsche Forschungsgemeinschaft.
- Ferromagnetic materials
- Ferromagnetic shape memory alloys
- Magnetic field-induced shape change
- Martensitic phase transformation
ASJC Scopus subject areas
- Materials Science (all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys