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，航空旅行已经成为一个对成本非常敏感的行业。在全球范围内保持 竞争激烈的航空发动机制造商，如普拉特和惠特尼加拿大公司(P&WC)，越来越关注 关于降低制造成本。燃气轮机发动机成本的一个贡献者是高的购买与飞行比率 (BTF)是由于严重依赖传统制造方法的材料去除和浪费(即 加工锻造钢坯)。原生金属生产是生产的重要因素。 发动机部件中含有的温室气体和镍、铬元素是不可再生的 资源。因此，较高的生物转化率对环境有显著的负面影响。 航空航天公司正在采用更多的近净形状(NS)制造，以总体上降低BTF 制造成本和开发绿色技术。P&WC正在追求一种结合了 采用粉末注射成型(PIM)的炉钎焊。挑战在于制造PIM零件和铜焊接头 其机械性能和性能与使用传统制造方法制造的部件相同。 该研究计划的目标是开发和使用一些先进的热分析技术来 对镍基高温合金的钎焊和注射成形工艺有基本的了解。这份热分析报告 将用于开发加工技术，以避免形成有害的硼化物化合物和 钎焊接头上的孔洞。分析还将加深对正在发生的变化的理解 在注射成形零件的脱脂、烧结和热处理过程中。 该计划将允许P&WC将NS处理扩展到其发动机制造的结构部件 降低了BTF，降低了成本，减少了材料浪费。这将带来更具竞争力的加拿大人 航天工业与经济、绿色制造技术的发展和改善 环境。在该计划期间，将培训13名高素质的专业人员，他们将为 未来几十年的航空航天工业。

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.