Analysis of creep-fatigue crack growth behaviour in W-Eurofer97 brazed joints

W-Eurofer97 钎焊接头的蠕变疲劳裂纹扩展行为分析

• 批准号: 2295991
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2295991
• 关键词: Analysis; creep; fatigue; crack; growth

For the development of future fusion reactors, a refractory metal (ie. tungsten) has to be joined to a structural material such as steel. The research conducted in collaboration focuses on finding alloys suitable for brazing tungsten to steel and evaluating their performance with various experiments which, when possible are complemented with finite element simulations. Since material research in nuclear fusion requires the development and testing of small specimen for measurement of material performance after irradiation, understanding the impact and differences of changing specimen size is also of interest. Current experimental procedures for measuring creep-crack growth in nuclear steels are also being experimented upon to assess whether they are suitable for measuring the same properties in miniature samples and composite miniature samples.

为了发展未来的聚变反应堆，一种难熔金属（即。钨）必须连接到结构材料如钢上。合作进行的研究重点是寻找适合将钨钎焊到钢上的合金，并通过各种实验评估其性能，在可能的情况下，还可以通过有限元模拟进行补充。由于核聚变中的材料研究需要开发和测试用于测量辐照后材料性能的小样品，因此了解改变样品尺寸的影响和差异也很有意义。目前用于测量核钢蠕变裂纹扩展的实验程序也正在进行实验，以评估它们是否适合于测量微型样品和复合微型样品的相同性能。