Physical factors controlling the ductility of bulk metallic glasses
Physical factors controlling the ductility of bulk metallic glasses
复制标题
控制大块金属玻璃延展性的物理因素
DOI：
10.1063/1.2998410
复制
发表时间：
2008-10-13
影响因子：
4
通讯作者：
Keppens, V.
中科院分区：
文献类型：
--
作者：
Liu, Y.;Wu, H.;Keppens, V.
为了确定控制大块金属玻璃（BMG）变形和断裂行为的关键物理因素，我们编制并分析了大块金属玻璃的弹性模量和压缩延展性。此外，在临界范围内生成了新的模量数据，以便于分析。我们发现，根据 Pugh 的 [Philos.]，BMG 的固有延展性可以与体积剪切模量比 B/G 相关。马格。 45, 823 (1954)]规则。在一些单独的 BMG 系统中，例如铁基系统，这种关系似乎非常明确。这种相关性的物理意义是根据原子键合和连接性来讨论的。
In order to identify key physical factor controlling the deformation and fracture behavior of bulk metallic glasses (BMGs), we compiled and analyzed the elastic moduli and compressive ductility for BMGs. In addition, new modulus data were generated in the critical ranges in order to facilitate the analysis. We have found that the intrinsic ductility of BMGs can be correlated with the bulk-to-shear modulus ratio B/G according to Pugh’s [Philos. Mag. 45, 823 (1954)] rule. In some individual BMG systems, for example, Fe based, the relationship seems to be very clear. The physical meaning of this correlation is discussed in terms of atomic bonding and connectivity.