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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Enhanced plasticity of Fe-Nb-B-(Ni, Cu) bulk metallic glasses by controlling the heterogeneity and elastic constants
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Enhanced plasticity of Fe-Nb-B-(Ni, Cu) bulk metallic glasses by controlling the heterogeneity and elastic constants

机译：通过控制异质性和弹性常数，增强Fe-Nb-B-（Ni，Cu）大块金属玻璃的可塑性

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摘要

Influence of the micro-alloying of Cu and the partial substitution of Fe by Ni on mechanical properties was investigated in Fe-Nb-B-(Ni, Cu) bulk metallic glasses (BMGs). When the addition of Cu content was properly adjusted with 0.5at.%, the (Fe_(0.71)Nb_(0.06)B_(0.23))_(99.5)Cu_(0.5) alloy exhibits enhanced plasticity of 4.5% due to the precipitation of nano-scale particles. Meanwhile, the partial replacement of Ni for Fe also effectively improves the plastic strain caused by tuning the elastic constants. The (Fe_(0.5)Ni_(0.5))_(71)Nb_6B_(23) alloy with 1:1 Ni-to-Fe concentration ratio shows a large Poisson's ratio (0.356) and a pronounced plastic strain of 4.2%. These results indicate the improved room temperature plasticity of Fe-Nb-B-(Ni, Cu) BMGs can be achieved by the appropriate control of the heterogeneity and intrinsic elastic properties.
机译：在Fe-Nb-B-（Ni，Cu）块状金属玻璃（BMGs）中研究了Cu的微合金化和Ni部分取代Fe对机械性能的影响。当将Cu的添加量适当地调整为0.5at。％时，由于（Fe_（0.71）Nb_（0.06）B_（0.23））_（99.5）Cu_（0.5）合金的可塑性提高了4.5％。纳米级颗粒。同时，用Ni部分代替Fe也有效地改善了由调节弹性常数引起的塑性应变。镍铁比为1：1的（Fe_（0.5）Ni_（0.5））_（71）Nb_6B_（23）合金具有较大的泊松比（0.356）和4.2％的明显塑性应变。这些结果表明，Fe-Nb-B-（Ni，Cu）BMG的室温可塑性提高可以通过适当控制非均质性和固有弹性来实现。

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