Twin stabilization in a ferromagnetic shape memory alloy
| Autor: | Liyang Dai, E. Pagounis, Manfred Wuttig |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Condensed matter physics Mechanical Engineering Bent molecular geometry Metals and Alloys Modulus Shape-memory alloy Condensed Matter Physics Symmetry (physics) Ferromagnetism Mechanics of Materials Martensite Forensic engineering Relaxation (physics) General Materials Science Crystal twinning |
| Zdroj: | Scripta Materialia. 55:807-810 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2006.07.031 |
| Popis: | The modulus and damping of martensitic Ni49Mn26Ga25 (wt.%) cantilevers that deform by twin motion when bent have been investigated at room temperature. The modulus increases logarithmically as a function of aging time while the damping decreases commensurably. Both changes signal a gradual reduction of the twin boundary mobility. The logarithmic time dependence indicates a wide distribution of relaxation times. This distribution results from the volume dependence of the adaptation kinetics of nano-sized short range ordered clusters to the martensitic symmetry. |
| Databáze: | OpenAIRE |
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