Pronounced tensile plasticity at room temperature in a Au_(65)Cu_(10.5)Ag_(7.5)Si_(17) metallic glass

J.C. Qiao; H. Wang; J.M. Pelletier; H. Kato

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Pronounced tensile plasticity at room temperature in a Au_(65)Cu_(10.5)Ag_(7.5)Si_(17) metallic glass

机译：Au_（65）Cu_（10.5）Ag_（7.5）Si_（17）金属玻璃在室温下的明显拉伸塑性

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摘要

We report a pronounced tensile plasticity in a Au_(65)Cu_(10.5)Ag_(17)Si_(17) metallic glass at room temperature. The tensile strength of the metallic glass decreases by decreasing the strain rate. Plastic deformation is heterogeneous and many percolating shear bands are observed on the fracture surface. In parallel, dynamic mechanical analysis indicates the absence of a pronounced secondary (or β) relaxation. Therefore, no correlation is observed between the relaxation behavior and the tensile plasticity.

机译：我们报告在室温下Au_（65）Cu_（10.5）Ag_（17）Si_（17）金属玻璃中明显的拉伸可塑性。金属玻璃的拉伸强度通过降低应变率而降低。塑性变形是不均匀的，并且在断裂表面上观察到许多渗流剪切带。同时，动态力学分析表明没有明显的次级（或β）松弛。因此，在松弛行为和拉伸可塑性之间没有观察到相关性。

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来源
《Materials Science and Engineering》 |2014年第10期|32-36|共5页
作者
J.C. Qiao; H. Wang; J.M. Pelletier; H. Kato;
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作者单位

Universite de Lyon, CNRS, INSA-Lyon, MATEIS UMR5510, F-69621 Villeurbanne, France;

Department of Materials Science, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan;

Universite de Lyon, CNRS, INSA-Lyon, MATEIS UMR5510, F-69621 Villeurbanne, France;

Institute for Materials Research, Tohoku University, Sendai, Miyagi 980-8577, Japan;

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正文语种 eng
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关键词
Bulk amorphous alloys; Superplasticity; Shear bands;

机译：大块非晶合金;超塑性剪切带;

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Pronounced tensile plasticity at room temperature in a Au_(65)Cu_(10.5)Ag_(7.5)Si_(17) metallic glass

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