Abstract
A two-stage-like glass transition phenomenon attenuated gradually with an increase in Co content in (Fe1-yCoy)67.5Nb 4Gd3.5B25 (y = 0.1-0.5) glassy alloys, and disappeared for the alloy with y = 0.5, resulting in a large supercooled liquid region of 102 K. As the Co content increases, the liquidus temperature decreases gradually, and the reduced glass transition temperature increases, indicating the enhancement of glass-forming ability (GFA). The best GFA was obtained for alloy with y = 0.5, and the full glassy sample with a diameter of 5 mm could be fabricated by copper mold casting. The (Fe,Co)-Nb-Gd-B glassy alloys exhibited good soft magnetic properties, i.e., rather high saturation magnetization of 0.86-0.91 T, low coercive force below 5.0 A/m, and low saturated magnetostriction of 6-13 × 10-6. In addition, the glassy alloys also possessed very high compressive fracture strength of 3821-4112 MPa and high Vickers hardness of 1028-1065.
Original language | English |
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Pages (from-to) | S129-S131 |
Journal | Journal of Alloys and Compounds |
Volume | 504 |
Issue number | SUPPL. 1 |
DOIs | |
Publication status | Published - 2010 Aug 1 |
Keywords
- Fe-based alloy
- Glass transition
- Glass-forming ability
- Magnetic property
- Metallic glass
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry