Simulation and Modelling of Interactions between Dislocations and Precipitates in High Strength Light Alloys

高强度轻合金中位错与析出物相互作用的模拟和建模

• 批准号: LX0989204
• 负责人: Prof Jian-Feng Nie
• 金额: $ 4.37万
• 依托单位: Monash University
• 依托单位国家: 澳大利亚
• 项目类别: Linkage - International
• 财政年份: 2009
• 资助国家: 澳大利亚
• 起止时间: 2009-06-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LX0989204
• 关键词: Simulation; Modelling; Interactions; between; Dislocations

Most light alloys are strengthened by highly dispersed nanoscale precipitates. The mechanical behaviour of these alloys is determined by the intimate coupling between precipitate microstructure (size, shape and spatial distribution) and dislocation activities (by-pass, shearing and adsorption at interfaces). By integrating state-of-the-art experimental characterization and computer simulation techniques, this project aims to reveal detailed and accurate deformation mechanisms in these alloys. The knowledge gained and models developed are expected to provide guidelines to the optimization of existing alloys and design of new alloys, which is expected to create substantial wealth for Australia.

大多数轻合金通过高度分散的纳米级沉淀物进行强化。这些合金的机械行为是由沉淀物微观结构（尺寸、形状和空间分布）和位错活动（界面处的旁路、剪切和吸附）之间的紧密耦合决定的。通过整合最先进的实验表征和计算机模拟技术，该项目旨在揭示这些合金中详细而准确的变形机制。所获得的知识和开发的模型预计将为现有合金的优化和新合金的设计提供指导，这有望为澳大利亚创造大量财富。