Approaching near-ideal strength for bulk amorphous metals

本项目旨在开发一种新的金属材料设计策略，以打破纳米晶体金属和大块金属玻璃的强度天花板。这种策略是基于一种新的概念，即大块非晶基质和嵌入其中的相变纳米晶体之间的协同作用。纳米晶通过其均匀的转变晶格畸变，防止非晶基体中剪切带的形成，并使集体原子负载转移使非晶基体继续加载以达到其固有的近理想强度。非晶态基体消除了纳米晶的晶界塑性。这个概念在物理冶金史上是新颖的，未经检验的。

This project aims to develop a novel metal materials design strategy to break the strength ceilings of nanocrystalline metals and bulk metallic glasses. This strategy is based on a novel concept of synergy between a bulk amorphous matrix and phase-transforming nanocrystallites embedded within. The nanocrystallites, via their uniform transformation lattice distortion, prevent the formation of shear bands in the amorphous matrix and enable collective atomic load transfer to allow the amorphous matrix to continue to load to achieve its intrinsic near-ideal strength. The amorphous matrix eliminates the grain boundary plasticity of the nanoscrystallites. This concept is novel and untested in the history of physical metallurgy.