Modelling the extraordinary strength of superalloys

模拟高温合金的非凡强度

• 批准号: 2422239
• 金额: --
• 依托单位: University of Warwick
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2422239
• 关键词: Modelling; extraordinary; strength; superalloys

The extraordinary strength of superalloys (used e.g. in aeroplane engines) is caused by nanoscale precipitates formed in an ageing process. This process covers timescales from femtoseconds up to seconds and beyond, which poses a formidable modelling challenge. Isolating rare events where atoms actually move from thermal vibrations around their equilibrium position speeds up the simulation to allow studying the precipitate formation process with a view to understanding and potentially improving it. Of particular interest is the robustness of the predicted precipitation pathways to uncertainties in the atomistic model used.

超级合金（例如用于飞机发动机）的非凡强度是由老化过程中形成的纳米级沉淀物引起的。这一过程涵盖了从飞秒到秒甚至更长的时间尺度，这对建模提出了巨大的挑战。隔离罕见的事件，原子实际上从热振动周围的平衡位置的模拟速度，以允许研究沉淀物的形成过程，以期了解和潜在的改善it.Of特别感兴趣的是预测的沉淀途径的鲁棒性的不确定性，在原子模型中使用。