Enhancement of the soft magnetic properties of FeCoZrMoWB bulk metallic glass by microalloying
Enhancement of the soft magnetic properties of FeCoZrMoWB bulk metallic glass by microalloying
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通过微合金化增强 FeCoZrMoWB 大块金属玻璃的软磁性能
DOI：
10.1088/0953-8984/16/21/020
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发表时间：
2004-06
期刊：
影响因子：
--
通讯作者：
H.Y. Bai
中科院分区：
文献类型：
--
作者：
W.H. Wang;M.X. Pan;D.Q. Zhao;Y. Hu;H.Y. Bai
在已知的铁基合金中，Fe61Co7Zr9.5Mo5W2B15.5大块金属玻璃具有最好的非晶形成能力、高的热稳定性和最高的强度(抗压强度σ=3800 Mpa)。遗憾的是，这种BMG并不像其他铁基BMG那样具有良好的软磁性能。我们在这里报道了少量的Ni添加(微合金化)可以显著地提高合金的软磁性能，而不会恶化其高GFA。当只添加3at.%Ni时，饱和磁化强度提高了3倍，而矫直力降低了约40倍。这种改善是由于随着Ni含量的增加，磁交换作用增强所致。结果表明，通过改变某些组分的含量来调节铁基BMG的磁性能是可能的。BMG具有良好的软磁性能、超高的机械强度、良好的GFA和高的热稳定性，具有广阔的应用前景。
The Fe 61 Co 7 Zr 9.5 Mo 5 W 2 B 15.5 bulk metallic glass (BMG) has the best glass forming-ability (GFA), high thermal stability, and the highest strength (the compressive strength σ= 3800 MPa) among known Fe-based alloys. Unfortunately, this BMG does not have the same good soft magnetic properties as other Fe-based BMGs do. We report here that a small amount of Ni addition (microalloying) can significantly enhance the soft magnetic properties of the alloy without deteriorating its high GFA. The saturation magnetization is increased threefold, while the coercivity is decreased about 40-fold, with only 3 at.% Ni addition. The improvement is interpreted to result from the enhancement of the magnetic exchange interaction as the Ni content increases. The results indicate that it is possible to adjust the magnetic properties of Fe-based BMGs by a minor change in the content of some component. BMGs with good soft magnetic property, ultrahigh mechanical strength, good GFA and high thermal stability show some promise for future applications.
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