Synthesis and dynamic nano structure change in metallic glasses with stable inhomogeneous local structure

在铜型铸造工艺中，通过改变气氛可以控制过冷液体中的形核方式。含Pd或Nb的Zr基大块非晶合金具有良好的塑性。这是由于变形引起的动态纳米结构变化。我们还研究了动态纳米结构变化和玻璃结构控制的协同效应对金属玻璃力学性能如塑性的改善是非常重要的。

We observed that the nucleation mode in supercooled liquid can be controlled by changing atmosphere in the Cu mold casting technique. Zr-based bulk metallic glasses containing Pd or Nb exhibit a good plasticity. It is due to the deformation-induced dynamic nanostructure change. We also investigated that the synergy effect of dynamic nanostructure change and glassy structure control is very important on the improvement of mechanical properties such as plasticity in metallic glasses.