Fe-based bulk glassy alloy composite containing in situ formed α-(Fe,Co) and (Fe,Co)23B6 microcrystalline grains
Fe-based bulk glassy alloy composite containing in situ formed α-(Fe,Co) and (Fe,Co)23B6 microcrystalline grains
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DOI：
10.1063/1.2348737
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发表时间：
2006-09
影响因子：
4
通讯作者：
B. Shen;H. Men;A. Inoue
中科院分区：
文献类型：
--
作者：
B. Shen;H. Men;A. Inoue
本文报道了一种含有原位形成的α-(Fe,Co)和fcc-(Fe,Co)23B6微晶的{[(Fe0.5Co0.5)0.75B0.2Si0.05]96Nb4}99.75Cu0.25大块玻璃合金（BGA）复合材料。加入0.25 at。% Cu与熔体中析出的Fe、α-(Fe,Co)和fcc-(Fe,Co)23B6相具有正混合焓，晶粒尺寸为3μm，生成了原位Fe基BGA复合材料。与[(Fe0.5Co0.5)0.75B0.2Si0.05]96Nb4单相BGA相比，制备的fe基BGA复合材料不仅具有4050MPa的超高断裂强度，而且具有优异的屈服性能，在压缩破坏时塑性应变提高了0.6%。
We report on an {[(Fe0.5Co0.5)0.75B0.2Si0.05]96Nb4}99.75Cu0.25 bulk glassy alloy (BGA) composite containing in situ formed α-(Fe,Co) and fcc-(Fe,Co)23B6 microcrystalline grains produced by copper mold casting. By adding 0.25 at. % Cu exhibiting positive mixing enthalpy with Fe, α-(Fe,Co) and fcc-(Fe,Co)23B6 phases with a grain size of 3μm precipitated from the melt during casting, yielding an in situ Fe-based BGA composite. The resulting Fe-based BGA composite shows not only a superhigh fracture strength of 4050MPa but also distinguished yielding combined with an enhanced plastic strain of 0.6% to failure in a compression relative to the [(Fe0.5Co0.5)0.75B0.2Si0.05]96Nb4 single-phase BGA.