Influence of quenching rate on the magnetic and martensitic properties of Ni-Fe-Ga melt-spun ribbons

Journal Article · Sun Aug 15 00:00:00 EDT 2010 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3465613· OSTI ID:21476431

Okumura, H; Uemura, K ^[1]

---

1. Department of Machine Intelligence and Systems Engineering, Akita Prefectural University, Yurihonjo 015-0055 (Japan)

We have fabricated Ni-Fe-Ga {beta} single phase alloy ribbons with Ga content less than 25 at. %. Higher spinning rate of melt-spinning technique can produce {beta} single phase alloys without precipitation of {gamma} particles, whereas lower spinning rate results in the {beta}+{gamma} two phase structure. This higher quenching rate is found to be able to fully suppress the formation of {gamma} phase during fabrication. The martensitic and magnetic transition temperatures of {beta} phase ribbons are both above room temperature, and the ribbon show saturation magnetization as high as 56.5 emu/g at room temperature. These features are attractive for practical applications. The effects of quenching rate on microstructure, martensitic transformation, and magnetic properties are discussed.

• OSTI ID: 21476431
• Journal Information: Journal of Applied Physics, Vol. 108, Issue 4; Other Information: DOI: 10.1063/1.3465613; (c) 2010 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
FABRICATION
FERROMAGNETIC MATERIALS
GALLIUM ALLOYS
MAGNETIC PROPERTIES
MAGNETIZATION
MARTENSITIC STEELS
MICROSTRUCTURE
NICKEL ALLOYS
PHASE TRANSFORMATIONS
PRECIPITATION
QUENCHING
TEMPERATURE DEPENDENCE
TRANSITION TEMPERATURE
ALLOYS
CARBON ADDITIONS
IRON ALLOYS
IRON BASE ALLOYS
MAGNETIC MATERIALS
MATERIALS
PHYSICAL PROPERTIES
SEPARATION PROCESSES
STEELS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT ALLOYS