Microstructural Analysis of Co-Cr Alloy Produced by Additive Manufacturing Process

Precision ADM是一家加拿大公司，帮助客户公司利用先进的数字制造技术，包括增材制造（AM），以更高的生产率和更低的成本生产更坚固、更轻的创新零件，而不会对环境造成不必要的负担。该公司服务的关键行业之一是航空航天工业。加拿大航空航天业在就业、创新、生产力和贸易方面对加拿大经济具有重要的战略贡献。AM技术由于其许多有吸引力的优点，已显示出补充或取代某些传统制造工艺的潜力。它可以用来生产复杂形状的零件，这些零件几乎不可能通过其他制造工艺来制造。它也可以用于生产单片组件，从而消除了组装和连接的需要，这也使得新设计和定制的引入变得容易和快速。此外，对于航空航天产品，这往往遭受极低的fly-to-buy ratio，AM工艺可以降低成本，在改善的时间和材料利用率方面，本研究项目旨在了解孔隙形成的根本原因，在AM的航空航天Co-Cr合金的直接激光金属沉积方法。最终目标是找到一种有效的方法来最大限度地减少或完全消除多孔性，这是已知的显着降低AM产品的机械性能和性能。将通过使用马尼托巴大学的显微镜和光谱设备进行详细的显微结构研究，以分析和了解多孔性的原因。这将使一个有效的程序foreregating问题的发展，这将导致有效的AM过程，降低成本，提高飞机的安全性。最终，该项目将有助于加拿大在先进制造技术方面的竞争力。

Precision ADM is a Canadian company that helps their customer companies to take advantage of advanceddigital manufacturing technologies, including additive manufacturing (AM), to produce innovative parts thatare stronger and lighter and at higher production rate and lower costs without undue burden to the environment.One of the key sectors that the company serves is the aerospace industry. Canadian aerospace industry is astrategically important contributor to the Canadian economy in terms of employment, innovation, productivityand trade. AM technology has shown potential to complement or replace some conventional manufacturingprocesses due to some of its many attractive benefits. It can be used to produce parts with complicated shapesthat are almost impractical to create by other manufacturing processes. It can also be used to producemonolithic components, thereby eliminating the need for assembling and joining, which also enables the easeand rapid introduction of new designs and customization. Moreover, for aerospace products, which often sufferfrom extremely low fly-to-buy ratio, the AM process can reduce costs in terms of improved time and materialutilization.This research project aims at understanding the underlying cause of porosity that forms during AM of anaerospace Co-Cr alloy by direct laser metal deposition method. The ultimate goal is the find an effectiveprocedure to minimize or completely eliminate the porosity, which is known to significantly degrademechanical properties and performance of AM products. A detailed microstructural study, through the use of asuite of microscopy and spectroscopy equipment at the University of Manitoba will be performed to analyzeand understand the cause(s) of the porosity. This will enable the development of an effective procedure foreradicating the problem, which will lead to effective AM process that lowers cost and enhance safety inaircrafts. Ultimately the project will aid Canada's competitiveness in advanced manufacturing technology.