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

位错离解和位错核心结构对有序合金塑性流动的影响

• 批准号: 8822858
• 负责人: David Pope
• 金额: --
• 依托单位: University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-15 至 1992-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8822858&HistoricalAwards=false
• 关键词: Effects; Dislocation; Dissociation; Core; Structure

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.

这项研究包括一项为期三年的塑料研究， 金属间化合物的变形性能。 本研究 结合了理论和实验研究， 位错“核心”内的离解控制着 六方密排有序的塑性变形过程 例如Ti3Al。 单晶的实验研究 Mn3Sn检查这样的属性：主动滑移系统，临界 作为温度的函数的分解的剪切应力，以及 加强机制。 这些塑料的原子模型 变形过程涉及嵌入原子的应用 法