Structural evolution in bulk metallic glass under high-temperature tension
Structural evolution in bulk metallic glass under high-temperature tension
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DOI：
10.1063/1.4790393
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发表时间：
2013-02
影响因子：
4
通讯作者：
X. D. Wang;H. Lou;J. Bednarčík;H. Franz;H. Sheng;Q. Cao;J. Jiang
中科院分区：
文献类型：
--
作者：
X. D. Wang;H. Lou;J. Bednarčík;H. Franz;H. Sheng;Q. Cao;J. Jiang
使用原位 X 射线衍射和分子动力学模拟研究了 Cu46Zr46Al8 块体金属玻璃 (BMG) 在高温下的拉伸行为。结果表明，在弹性变形过程中会产生过量的开放体积，并在塑性流动开始之前积累足够的量。在均匀变形过程中，开孔体积几乎保持恒定，这表明高开孔体积含量是开发具有显着拉伸塑性的 BMG 的关键点。
The tensile behavior of a Cu46Zr46Al8 bulk metallic glass (BMG) at elevated temperatures has been studied using in situ x-ray diffraction and molecular dynamics simulation. It is demonstrated that excess open volume is generated during elastic deformation and accumulated enough before plastic flow starts. The open volume almost keeps constant during homogeneous deformation, suggesting that a high content of open volume is a key point for developing BMGs with pronounced tensile plasticity.