Improving the ductility of amorphous alloys via severe plastic deformation

非晶合金是最坚固的金属材料。然而，材料的脆性极大地限制了它们在可靠性关键结构应用中的适用性。尽管在世界范围内做出了巨大的努力，但延展性的改善仅限于具有少数特定成分的非晶合金。本项目旨在开发一种通用的方法，通过应用剧烈塑性变形来大幅提高非晶合金的延性，探索剧烈塑性变形对结构的影响，揭示非晶合金力学行为的基本机制。研究结果有望为设计具有良好延展性的非晶合金提供理论依据。

Amorphous alloys are the strongest metallic materials. However, the brittle nature of the materials has significantly limited their applicability in reliability-critical structural applications. Despite significant worldwide efforts, improvement of the ductility has been limited to amorphous alloys with only a few specific compositions. This project aims to develop a universal approach to substantially enhancing the ductility of amorphous alloys through the application of severe plastic deformation, to explore the effect of severe plastic deformation on structure, and to reveal the fundamental mechanisms of the mechanical behaviour of amorphous alloys. The results are expected to enable structural design of amorphous alloys with excellent ductility.