Weld repair and in service damage in power plant steels

电厂钢材的焊缝修复和使用中损坏

• 批准号: 2266794
• 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: 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-2266794
• 关键词: Weld; repair; service; damage; power

Weld repair of power generation steels remains a vital part of the life management process. The repaired components go on to experience service loading and therefore the creep behaviour of the weld repair regions needs to be understood. A key goal of this project is to link the observed damage in the heat affected zone of the post-creep test repair welds to the observed distribution of particles, grain size/features and other relevant pre-test microstructural observations in the repair welds. Low alloy and creep strength enhanced ferritic steels as well as dissimilar metal welds will be assessed.

发电钢材的焊接修复仍然是寿命管理过程中的重要部分。修复后的部件继续承受使用载荷，因此需要了解焊接修复区域的蠕变行为。该项目的一个关键目标是将在蠕变后试验修复焊缝的热影响区观察到的损伤与在修复焊缝中观察到的颗粒分布、晶粒度/特征和其他相关的试验前显微组织观察联系起来。将评估低合金和蠕变强度增强的铁素体钢以及不同类型的金属焊缝。