Three polycrystalline Ni 53.5+x -Fe 19.5-x -Ga 27.0 alloys, with x = 0, 0.5, 1.5 (at.%), have been aged at 520 and 670 K. The initial increase of martensitic transformation temperatures upon ageing has been attributed to a decrease of L2 1 order. The alloys with lower Fe content show remarkable ther
Thermal stability and ordering effects in Ni–Fe–Ga ferromagnetic shape memory alloys
✍ Scribed by J. Font; J. Muntasell; R. Santamarta; J. Pons; E. Cesari; V. Recarte; J.I. Pérez-Landazábal; C. Gómez-Polo; J. Dutkiewicz
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 224 KB
- Volume
- 481-482
- Category
- Article
- ISSN
- 0921-5093
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## Abstract The off‐stoichiometric Ni~2~MnGa Heusler alloy is a magnetic shape‐memory alloy capable of reversible magnetic‐field‐induced strains (MFIS). These are generated by twin boundaries moving under the influence of an internal stress produced by a magnetic field through the magnetocrystallin