Reinforcement of nanoglasses by interface strengthening
Reinforcement of nanoglasses by interface strengthening
复制标题
DOI：
10.1016/j.scriptamat.2017.08.004
复制
发表时间：
2017-12
影响因子：
6
通讯作者：
Constanze Kalcher;O. Adjaoud;J. Rohrer;A. Stukowski;K. Albe
中科院分区：
文献类型：
--
作者：
Constanze Kalcher;O. Adjaoud;J. Rohrer;A. Stukowski;K. Albe
纳米玻璃由通过无定形界面连接的玻璃状晶粒组成。虽然纳米玻璃中的内部界面有助于防止脆性破坏，但它们通常不利于玻璃的整体强度。在这个分子动力学研究中，我们操纵的Cu-Zr纳米玻璃的玻璃-玻璃界面，使它们被更强的结晶界面所取代。类似于晶体材料中的晶界强化，我们表明，它是可能的，以加强纳米玻璃，而不损害其延展性。
Nanoglasses consist of glassy grains connected by an amorphous interface. While internal interfaces in nanoglasses help to prevent brittle failure, they are usually not beneficial to the glasses overall strength. In this molecular dynamics study, we manipulate the glass–glass interfaces of a Cu–Zr nanoglass, such that they are replaced by stronger crystalline interphases. Analogous to grain boundary strengthening in crystalline materials, we show that it is possible to reinforce the nanoglass without compromising its ductility.