Plastic Deformation-Assisted Synthesis of Metallic Glass Nanostructures
Plastic Deformation-Assisted Synthesis of Metallic Glass Nanostructures
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DOI：
10.2320/matertrans.m2009027
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发表时间：
2009-07
影响因子：
1.2
通讯作者：
Yanhui Liu;Ke Wang;D. Pan;Hao Wang;K. Nakayama;A. Inoue;Weihua Wang;Mingwei Chen
中科院分区：
文献类型：
--
作者：
Yanhui Liu;Ke Wang;D. Pan;Hao Wang;K. Nakayama;A. Inoue;Weihua Wang;Mingwei Chen
本文报道了在室温准静态压缩条件下，通过大块金属玻璃的塑性变形，制备出棒状、线状和球状等多种金属玻璃纳米结构，并讨论了其形成机理和尺寸控制因素。通过剪切带内软化层的粘性流动形成纳米结构。这些纳米结构的长度取决于金属玻璃的断裂韧性，其决定了塑性变形期间的温度升高，从而决定了软化层的粘度。
In this paper, we report synthesis of various metallic glass nanostructures such as rods, wires and spheres via plastically deforming bulk metallic glasses in quasi-static compression at room temperature, and the formation mechanism and factors controlling their dimensions are discussed. The nanostructures are formed via viscous flow of softened layers within the shear band. The length of these nanostructures is dominated by the fracture toughness of metallic glass, which determines the temperature rise during plastic deformation and thus the viscosity of the softened layers.