The influence of composition of nuclear zirconium alloys on in-service corrosion performance

核用锆合金成分对服役腐蚀性能的影响

• 批准号: 2738446
• 金额: --
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2738446
• 关键词: influence; composition; nuclear; zirconium; alloys

Zirconium alloys are widely used as structural materials in electricity generating power plants because of their acceptable corrosion resistance. However there are key processes that limit the lifetime of critical components in service, and the mechanisms of these processes are not fully understood. This project will use and develop transmission electron microscope and atom probe tomography techniques to study how the microstructure and local chemistry of commercial zirconium alloys is modified by the conditions experienced in service. The student will concentrate on the rate of formation of precipitates in the metal matrix and how these are incorporated into growing oxide layers in alloys of different starting composition, and will use this data to formulate models for the dominant degradation processes.

锆合金由于其良好的耐腐蚀性而被广泛用作发电厂的结构材料。然而，有一些关键过程限制了关键部件的使用寿命，并且这些过程的机制尚未完全了解。该项目将使用和开发透射电子显微镜和原子探针断层扫描技术，以研究商业锆合金的微观结构和局部化学是如何通过使用中经历的条件进行修改的。学生将专注于金属基体中沉淀物的形成速率，以及这些沉淀物如何被纳入不同起始成分合金中的氧化物层中，并将使用这些数据来制定主要降解过程的模型。