Glass-forming ability and thermoplastic formability of ferromagnetic (Fe, Co, Ni)75P10C10B5 metallic glasses
Glass-forming ability and thermoplastic formability of ferromagnetic (Fe, Co, Ni)75P10C10B5 metallic glasses
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DOI：
10.1016/j.jallcom.2016.11.227
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发表时间：
2017-06
影响因子：
6.2
通讯作者：
Wei Zhang;Haitao Miao;Yanhui Li;Chuntao Chang;G. Xie;X. Jia
中科院分区：
文献类型：
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作者：
Wei Zhang;Haitao Miao;Yanhui Li;Chuntao Chang;G. Xie;X. Jia
用Co和Ni替代Fe75P10C10B5金属玻璃中的Fe，有效地提高了过冷液的稳定性和玻璃的形成能力。用铜模铸造方法在(Fe，Co，Ni)75P10C10B5合金系中，在30~60at.%Fe，0~45at.%Co，0~40at.%Ni的较宽成分范围内获得了大过冷液相区(ΔTx)大于50℃，临界样品直径(DC)大于1 mm的块体金属玻璃。Fe40Co20Ni15P10C10B5合金的最大Δ为2.5 mm，最大Tx为60℃，较低的玻璃化转变温度为675℃，过冷液相粘度在S的108-109Pa量级，具有明显的塑性应变，压缩屈服强度为2860 MPa，具有较高的软磁性能，即较高的饱和磁化强度1.13T和较低的矫顽力3.8A/m。
Substitution of Co and Ni for Fe in an Fe75P10C10B5metallic glass effectively increases the stability of supercooled liquid and glass-forming ability. The bulk metallic glasses with large supercooled liquid region (ΔTx) exceeding 50 K and the critical sample diameter (dc) of over 1 mm were obtained in a wide composition range from 30 to 60 at.% Fe, 0 to 45 at.% Co and 0 to 40 at.% Ni in the (Fe, Co, Ni)75P10C10B5alloy system by copper mold casting. An Fe40Co20Ni15P10C10B5alloy shows maximumdcof 2.5 mm, largest ΔTxof 60 K, low glass transition temperature of 675 K, low viscosity on the order of 108–109Pa s in the supercooled liquid state, high compressive yield strength of 2860 MPa with a distinct plastic strain, and good soft magnetic properties, i.e., rather high saturation magnetization of 1.13 T and low coercive force of 3.8 A/m. The nano-scale Fe40Co20Ni15P10C10B5glassy patterns were precisely formed by imprinting, indicating its good thermoplastic formability.