Effect of alloying filler materials for repair of turbine engine components utilizing liburdi advanced LPM and laser self-healing processes

用于航空航天和陆基应用的高温合金部件的修复是降低运营成本和延长其使用寿命的可行途径。目前使用的维修程序是多年来从工业经验和技术以及昂贵和耗时的试错方法的组合中开发出来的。缺乏知识和模型，解决一些关键的基本现象，在多组分高温合金系统的修复过程中涉及的主要原因之一。该提案由Liburdi涡轮机服务公司和麦吉尔大学共同设计，将解决现有的知识差距，允许开发更严格和系统的方法来设计和优化修复合金和相关的工艺参数。待探索的现象包括液体-固体相互作用（润湿、铺展、渗透）和熔点高的物质的扩散及其对演变的液相特性的影响沿着。获得的基础知识将用于了解微观结构的演变，以及多组分修复接头的室温和高温力学性能。LTS将在拟议的研究中发挥关键作用，因为他们看到了在涡轮机维护、修理和大修领域保持竞争力和技术领先地位的途径。这些关系将有助于重新审视他们目前的修复技术，并设计未来的配方和相关的工艺参数。该研究的传播将有助于保持加拿大在材料工程和材料加工领域的世界领先地位。

The repair of superalloy components used in the aerospace and land-based applications is a viable avenue for reducing operating costs and increasing their service life. The currently used repair procedures were developed over the years from a combination of industrial experience and know how, and costly and time-consuming trial and error approaches. The lack of knowledge and models addressing some of the key fundamental phenomenon involved during repair of multicomponent superalloy systems is one of the primary reason. This proposal, co-designed by Liburdi Turbine Services and McGill University, will address existing knowledge gaps, permitting the development of more rigorous and systematic approaches for the design and optimisation of repair alloys and associated processing parameters. The phenomena to be explored include liquid-to-solid interactions (wetting, spreading, infiltration) and the diffusion of melting point depressant species along with its influence on the evolving liquid phase characteristics. The fundamental knowledge to be gained will be used to understand the evolution of the microstructure, as well as the room and high temperature mechanical properties of multicomponent repair joints. LTS will play a key role in the proposed research, as they see an avenue to maintaining their competitiveness and technological leadership in the field of turbine maintenance, repair and overhaul. The relationships will be instrumental in the potential re-visiting of their current repair technologies and in the design of future formulations and associated processing parameters. The dissemination of the research will contribute to maintain Canada's position as a world leader in the field of materials engineering and materials processing.