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首页> 外文期刊>Chinese science bulletin >Deformation behavior during nanoindentation in Ce=based bulk metallic glasses
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Deformation behavior during nanoindentation in Ce=based bulk metallic glasses

机译：Ce =基块状金属玻璃在纳米压痕过程中的形变行为

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摘要

The deformation behavior and the effect of the loading rate on the plastic deformation in Ce-based bulk metallic glasses (BMGs) were investigated through nanoindentation tests. The results showed that the loading rate dependence of plastic deformation during nanoindentation measurements in the Ce-based BMGs is quite unique in contrast to that of other BMG alloys. The load-displacement (P-h) curves of Ce6oAl_(15)Cu_(10)Ni_(15) BMG exhibit a homogeneous plastic deformation at low loading rates, and a prominent serrated flow at high strain rates, whereas, the P-h curves of Ce_(65)Al_(10)GU_(10)Ni_(10)Nb_5 exhibit homogenous plastic deformation at all studied loading rates. The room temperature creep behavior could clearly be observed in these two alloys. The mechanism of the unique plastic deformation feature in the Ce-based BMGs was studied.
机译：通过纳米压痕试验研究了Ce基块状金属玻璃（BMGs）的变形行为和加载速率对塑性变形的影响。结果表明，与其他BMG合金相比，Ce基BMG中纳米压痕测量过程中塑性变形的加载速率依赖性非常独特。 Ce6oAl_（15）Cu_（10）Ni_（15）BMG的载荷-位移（Ph）曲线在低载荷率下表现出均匀的塑性变形，在高应变率下表现出明显的锯齿状流动，而Ce_（ 65）Al_（10）GU_（10）Ni_（10）Nb_5在所有研究的加载速率下均表现出均匀的塑性变形。在这两种合金中可以清楚地观察到室温蠕变行为。研究了Ce基BMGs独特的塑性变形特征的机理。

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