Enhancement of glass-forming ability of CoFeBSiNb bulk glassy alloys with excellent soft-magnetic properties and superhigh strength

2010 ◽  
Vol 18 (10) ◽  
pp. 1876-1879 ◽  
Author(s):  
Qikui Man ◽  
Huaijun Sun ◽  
Yaqiang Dong ◽  
Baolong Shen ◽  
Hisamichi Kimura ◽  
...  
2013 ◽  
Vol 745-746 ◽  
pp. 815-822
Author(s):  
Ya Qiang Dong ◽  
Qi Kui Man ◽  
Bao Long Shen

The effect of Nb addition on the glass-forming ability (GFA), soft-magnetic properties and mechanical properties of [(Co0.65Fe0.35)0.9Ni0.1]73-xB21.9Si5.1Nbx(x=36) alloy system were investigated. The results showed that by adjusting the content of Nb, the thermal stability of the supercooled liquid and the GFA increased effectively. With increasing the amount of Nb, the supercooled liquid region (ΔTx) increased from 45 to 65 K and the reduced glass transition temperature (Trg=Tg/Tl) was located in the range of 0.5840.644. As a result, the [(Co0.65Fe0.35)0.9Ni0.1]73-xB21.9Si5.1Nbx bulk glassy alloys (BGAs) with diameters up to 5.0 mm were produced by copper mold casting. In addition to the high GFA, the Co-based glassy alloys exhibited excellent soft-magnetic properties, i.e., saturation magnetization of 0.530.81 T, low coercive force of 0.511.75 A/m, and high effective permeability of (1.522.53)×104 at 1 kHz under a field of 1 A/m. Besides, the Co-based BGAs also exhibited super high fracture strength of 42704490 MPa and vickers hardness of 11271182.


2015 ◽  
Vol 140 ◽  
pp. 140-143 ◽  
Author(s):  
Huaijun Sun ◽  
Li Li ◽  
Yunzhang Fang ◽  
Linlin Wang ◽  
Xindu Fan ◽  
...  

2010 ◽  
Vol 107 (9) ◽  
pp. 09A319 ◽  
Author(s):  
Huaijun Sun ◽  
Qikui Man ◽  
Yaqian Dong ◽  
Baolong Shen ◽  
Hisamichi Kimura ◽  
...  

2011 ◽  
Vol 509 ◽  
pp. S206-S209 ◽  
Author(s):  
Yaqiang Dong ◽  
Qikui Man ◽  
Huaijun Sun ◽  
Baolong Shen ◽  
Shujie Pang ◽  
...  

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