NSERC/Pratt and Whitney Canada Industrial Research Chair in Structural Brazing and Processing of Powder Metallurgy Superalloys

由于燃料成本的上涨，航空旅行已成为一个对成本非常敏感的行业。为了保持全球竞争力，航空发动机制造商，如普惠加拿大公司（P&WC）越来越注重降低制造成本。燃气涡轮机发动机成本的一个贡献因素是高购买飞行比 **（BTF），这是由于传统制造方法严重依赖于材料去除和浪费（即 **锻造坯料的加工）。初级金属生产是产生 ** 温室气体的重要因素，发动机零件中所含的镍和铬元素是不可再生的有限 ** 资源。因此，高BTF具有显著的负面环境影响。**航空航天公司正在采用更多的近净成形（NS）制造，以降低BTF，整体制造成本和开发绿色技术。P&WC正在寻求一种净成形方法，将炉内钎焊与粉末注射成型（PIM）相结合。挑战在于制造PIM零件和钎焊接头 **，其机械性能和性能与使用传统制造方法制造的零件相同。**本研究计划的目标是开发和使用一些先进的热分析技术，以获得对镍基高温合金钎焊和PIM加工的基本了解。这种热分析 ** 将用于开发加工技术，以避免在钎焊接头中形成有害的硼化物化合物和 ** 孔隙。该分析还将深入了解PIM零件脱脂、烧结和热处理过程中发生的变化。**该计划将使P&WC能够将NS处理扩展到其发动机制造 ** 操作的结构部件，从而降低BTF，成本和材料浪费。这将导致加拿大航空航天工业和经济更具竞争力，绿色制造技术的发展和环境的改善。13名高素质的专业人员将在该计划期间接受培训，他们将在未来几十年内为航空航天工业做出贡献。

Due to the rising cost of fuel, air travel has become a very cost sensitive industry. To remain globally**competitive, aero engine manufacturers such as Pratt and Whitney Canada (P&WC) have increasingly focused**on reducing manufacturing costs. A contributor to the cost of gas turbine engines is a high buy-to-fly ratio**(BTF) resulting from a heavy reliance of traditional manufacturing methods on material removal and waste (i.e.**machining of wrought billets). Primary metal production is a significant contributor to the production of**greenhouse gases and the Ni and Cr elements contained within engine parts are non renewable limited**resources. Therefore a high BTF has a significant negative environmental impact.**Aerospace companies are adopting more near net shape (NS) manufacturing to reduce BTF, overall**manufacturing costs and develop green technologies. P&WC is pursuing a net shape method which combines**furnace brazing with powder injected molding (PIM). The challenge is to create PIM parts and brazed joints**that have mechanical properties and performance equal to parts made using traditional manufacturing methods.**The goal of this research program is to develop and use a number of advanced thermal analysis techniques to**gain a fundamental understanding of Ni-based superalloy brazing and PIM processing. This thermal analysis**will be used to develop processing techniques which avoid the formation of detrimental boride compounds and**porosity in the brazed joint. The analysis will also develop a deep understanding of the changes taking place**during debinding, sintering and heat treatment of PIM parts.**This program will allow P&WC to extend NS processing to the structural parts of their engine manufacturing**operations, thus decreasing the BTF, cost and material waste. This will lead to a more competitive Canadian**aerospace industry and economy, the development of green manufacturing technologies and an improved**environment. Thirteen highly qualified professionals will be trained during the program, who will contribute to**the aerospace industry for decades to come.