Nanostructural Investigation of Cleavage in the Presence of Plastic Flow

这个奖项是为了资助在从原子到宏观的不同长度尺度上模拟材料行为的研究。特别是在塑性流动的情况下，在不涉及强粘塑性阻滞位错运动的情况下，将研究解理。一个突出的问题是，当尖锐裂纹在无位错区传播时，纳米尺度的钝化作用。期望通过这一研究可以找到减少结构金属合金脆性破坏的方法。＊＊＊

9634657 Beltz This award is made in order to fund research that models material behavior on various length scales from the atomistic to the macroscopic levels. In particular cleavage in the presence of plastic flow, in circumstances which do not involve strong viscoplastic retardation of dislocation motion, will be studied. An outstanding issue will be the role of nanoscale blunting of a sharp crack when propagating through dislocation-free zones. It is expected that methods for reducing brittle failure of structural metallic alloys will emerge from this research. ***