|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIII
||Atomic Size Effect on Elastic Softening in Multicomponent Glasses Investigated by MD Simulation
||Zengquan Wang, Takuya Iwashita, Wojciech Dmowski, Takeshi Egami
|On-Site Speaker (Planned)
Elastic softening in bulk metallic glasses (BMGs) is facilitated by the stress relaxation process that takes place during the elastic deformation. However, systematic analysis of such elastic softening remains missing and its complete understanding may lead to the prediction of BMG plasticity. In this study, binary, ternary and quinary model glasses of 4000 Fe atoms with different atomic sizes and equal concentrations were obtained through the molecular dynamics (MD) simulation. Then uniaxial compression was applied to the glassy systems at room temperature in the simulation, and the dependence of glass transition temperature, elastic properties and stress relaxation ability on atomic size ratio and number of components were studied. The results show that the effect of elastic softening becomes weak with increasing atomic size ratio and number of elements. We will discuss how the stress relaxation can be controlled from microscopic point of view.
||Planned: A print-only volume