Building Engineering capability in Titanium Alloys (BETA)

为了为未来民用大型和商用航空燃气涡轮机发动机提供有竞争力的产品，罗尔斯·罗伊斯已经通过旋转压缩机部件（主要是盘和线性摩擦焊接（LFW）整体叶盘）所用材料的阶跃变化发现了机会。钛合金技术的进步导致市场上可获得更高强度的材料，这将使得能够设计更小和更轻重量的部件。通过扩展设计空间，新的组件设计架构将成为可能。这将支持在未来的超高效和零碳排放推进发动机中安装齿轮箱或嵌入发电机所需的必要发动机架构。该计划旨在将高强度钛（HSTi）合金成熟到TRL6，并发展英国设计和制造HSTi先进部件的能力。该项目的主要成果如下：* 鉴定一种用于关键盘部件和压气机翼型的新型高强度钛合金 * 完整的寿命相关性以了解操作边界，* 开发异种合金连接的连接工艺和大型关键旋转部件（如风扇盘）的制造，* 扩展冷驻留疲劳的复杂现象及其对最新钛合金的适用性的知识。该项目将为开发最新钛合金提供坚实的基础，这将带来能力的飞跃。预计它将对未来发动机的性能提高和重量减轻做出重大贡献。HSTi对当前维修技术的影响将作为验证计划的一部分进行评估。未来的维修技术方案将考虑采用更先进的维修技术。潜在的合作者是大学和研究中心，如伯明翰大学（UoB）、先进锻造研究中心（AFRC）、伦敦帝国理工学院（ICL）、斯旺西大学（SU）以及选定的专业工程资源（奥唐纳咨询服务公司（ODCS））。

For competitive product offerings for future civil large and business aviation gas turbine engines, Roll-Royce has identified opportunities through a step change in the materials utilised in rotating compressor components, primarily in discs and Linear Friction Welded (LFW) blisks. Advancements in titanium alloy technologies have resulted in higher strength materials being available in the market that will enable the design of smaller and lighter weight components. By expanding the design space, new component design architectures would be possible. This would support the necessary engine architectures required for incorporating gearboxes or embedding electrical generators in future Ultra-efficient and Zero-carbon emission propulsion engines.This programme aims to mature a High Strength Titanium (HSTi) alloy to TRL6 and develop UK capabilities to design & manufacture advanced components in HSTi. Some of the key deliverables from this programme are listed below:* Qualification of a new high strength titanium alloy for use in both critical disc components and compressor aerofoils* Full lifing correlations for understanding of operational boundaries,* Development of joining processes for dissimilar alloy joining and fabrication of large critical rotating components such as fan discs,* Extend knowledge on the complex phenomenon of cold dwell fatigue and its applicability to the latest titanium alloys.This programme will provide a solid foundation to exploit the latest titanium alloys, which will offer a step change in capability. It is anticipated to make a significant contribution to performance increases and weight reduction on future engines. The impact of HSTi on current repair techniques will be assessed as part of the validation programme. More advanced repair techniques will be considered in future repair technology programmes.Potential collaborators are universities and research centres such as University of Birmingham (UoB), Advanced Forging Research Centre (AFRC), and Imperial College London (ICL), Swansea University (SU), as well as selected specialist engineering resources (O'Donnell Consultancy Services (ODCS)).