TY - JOUR
T1 - Two-stage-like glass transition and the glass-forming ability of a soft magnetic Fe-based glassy alloy
AU - Zhang, Wei
AU - Jia, Fei
AU - Zhang, Xingguo
AU - Xie, Guoqiang
AU - Kimura, Hisamichi
AU - Inoue, Akihisa
PY - 2009
Y1 - 2009
N2 - The structure, thermal stability, and crystalline behavior of (Fe0.9 Co0.1) 67.5 Nb4 Gd3.5 B25 glassy alloy, which exhibits a two-stage-like glass transition phenomenon, were investigated using x-ray diffraction, transmission electron microscopy, and differential scanning calorimetry. The nanoscale metastable (Fe,Co) 23 B6 phase precipitated in the glassy matrix after annealing, while the two-stage-like glass transition disappeared, indicating the two-stage-like glass transition results from the overlap of the endothermic reaction for the glass transition with the exothermic reaction for the formation of the (Fe,Co) 23 B6 phase in the supercooled liquid region. The (Fe0.9 Co0.1) 67.5 Nb4 Gd3.5 B25 glassy alloy exhibits high glass-forming ability, enabling the formation of glassy alloy rods with diameters exceeding 3.0 mm, rather high saturation magnetization of 0.91 T, low coercive force of 2.5 A/m, and high fracture strength of 3870 MPa.
AB - The structure, thermal stability, and crystalline behavior of (Fe0.9 Co0.1) 67.5 Nb4 Gd3.5 B25 glassy alloy, which exhibits a two-stage-like glass transition phenomenon, were investigated using x-ray diffraction, transmission electron microscopy, and differential scanning calorimetry. The nanoscale metastable (Fe,Co) 23 B6 phase precipitated in the glassy matrix after annealing, while the two-stage-like glass transition disappeared, indicating the two-stage-like glass transition results from the overlap of the endothermic reaction for the glass transition with the exothermic reaction for the formation of the (Fe,Co) 23 B6 phase in the supercooled liquid region. The (Fe0.9 Co0.1) 67.5 Nb4 Gd3.5 B25 glassy alloy exhibits high glass-forming ability, enabling the formation of glassy alloy rods with diameters exceeding 3.0 mm, rather high saturation magnetization of 0.91 T, low coercive force of 2.5 A/m, and high fracture strength of 3870 MPa.
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U2 - 10.1063/1.3080139
DO - 10.1063/1.3080139
M3 - Article
AN - SCOPUS:62549144428
VL - 105
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 5
M1 - 053518
ER -