The Effects of Dislocation Dissociation and Dislocation Core Structure on Plastic Flow in Ordered Alloys

本研究历时三年，主要研究金属间化合物的塑性变形特性。这项研究结合了理论和实验研究，研究了位错“核心”内的解离如何控制Ti3Al等六方紧密排列有序化合物的塑性变形过程。单晶Mn3Sn的实验研究考察了这些特性：主动滑移系统，临界分解剪切应力作为温度的函数，以及强化机制。这些塑性变形过程的原子建模涉及到嵌入原子法的应用。

This research consists of a three year study of the plastic deformation properties of intermetallic compounds. This study combines theoretical and experimental investigations of how dissociation within the "core" of a dislocation controls the plastic deformation processes of hexagonal close packed ordered compounds such as Ti3Al. Experimental studies of single crystal Mn3Sn examines such properties as: active slip systems, critical resolved shear stress as a function of temperature, and strengthening mechanisms. Atomistic modeling of these plastic deformation processes involves application of the embedded atom method.