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

Precision ADM是一家加拿大公司，帮助他们的客户公司利用先进的数字制造技术，包括增材制造（AM），以生产更强、更轻、生产率更高、成本更低的创新零件，而不会对环境造成不必要的负担。该公司服务的关键领域之一是航空航天工业。加拿大航空航天工业在就业、创新、生产力和贸易方面对加拿大经济做出了重要的战略贡献。增材制造技术由于其许多有吸引力的优点，已经显示出补充或取代一些传统制造工艺的潜力。它可以用来生产具有复杂形状的零件，这些零件几乎是其他制造工艺无法制造的。它也可以用于生产整体部件，从而消除了组装和连接的需要，这也使新的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，往往遭受极低的飞行购买比，增材制造工艺可以在改善时间和材料利用率方面降低成本。本研究项目旨在通过直接激光金属沉积方法了解航空航天Co-Cr合金增材制造过程中形成孔隙的根本原因。最终目标是找到一个有效的程序，以减少或完全消除孔隙率，这是已知的显著降低机械性能和增材制造产品的性能。通过使用曼尼托巴大学的一套显微镜和光谱设备，将进行详细的微观结构研究，以分析和了解孔隙度的原因。这将有助于制定有效的程序来消除问题，从而导致有效的增材制造过程，从而降低成本并提高飞机的安全性。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.