Improving mechanical properties through heterogeneous structures

本项目旨在通过研究层错能如何影响材料的力学性能来探索非均质结构相对于均质结构具有更好的力学性能的机制。具有异质结构的材料表现出优异的力学性能，部分原因是多种变形机制的同时激活。层错能在决定变形机制中起着关键作用，但这种影响对具有非均质结构材料的力学性能的影响机制尚不清楚。该项目有望为具有最佳机械性能的非均质金属结构的结构和成分设计提供指导，这将使澳大利亚冶金及相关行业受益匪浅。

This project aims to explore the mechanisms of how heterogeneous structures have superior mechanical properties relative to homogenous structures by investigating how stacking fault energy affects the mechanical properties of materials. Materials with heterogeneous structures demonstrate superior mechanical properties, partly due to the simultaneous activation of multiple deformation mechanisms. Stacking fault energy plays a critical role in determining deformation mechanisms, yet the mechanism of this effect on the mechanical properties of materials with heterogeneous structures is not understood. This project is expected to provide guidance in structural and compositional design of heterogeneous metallic structures with optimum mechanical properties, which will significantly benefit Australian metallurgical and related industries.