Additive Manufacturing of Crack Sensitive Inconel 738

增材制造（AM）是一种颠覆性技术，可以逐步构建非常复杂的对象 直接从数字文件中逐层生成，这些对象无法通过传统机械加工生产。Turbomeca 加拿大是航空航天领域的一家重要公司，在制造、维修和 直升机发动机大修透博梅卡加拿大希望采用增材制造来提高其竞争力， 工艺组合，以减少交付时间，提高设计/制造效率，采用新的维修 降低航空航天部件的生产/维修成本，这将导致最终目标 业务增长。该提案将研究数据，并向透博梅卡加拿大公司提供有关以下问题的答案： 在IN 738的增材制造过程中，在微观结构、偏析相和含量方面开发了新的可能性， 被认为是不可焊的合金。这一知识对于确定AM是否可以开辟新的制造业或 这些高成本航空零件的维修路线。主要目标是：（1）确定窗口 固化允许IN 738的AM，（2）实验验证该处理窗口，包括部分 表征和（3）将该知识转化为模拟实际的IN 738部件重建。Brochu教授 研究小组已经开发并验证了新的方法来执行不可焊合金的AM，因此可以 为IN 738的成功AM提供了答案，关闭了这座科学桥梁。这一举措也是 在CRIAQ的支持下，促进建立这一战略性的基于航空航天的增材制造研究项目。

Additive Manufacturing (AM) is a disruptive technology that incrementally builds very complex objects layer-by-layer directly from a digital file, objects impossible to produce by conventional machining. Turbomeca Canada is a key company in the field of aerospace, with a very strong expertise in manufacturing, repair and overhaul of helicopter engines. Turbomeca Canada desire to embrace AM to improve their competitiveness and process portfolio to reduce time for delivery, increase design/manufacturing efficiency, adopting new repair procedures and lower production/repair cost of their aerospace parts, which will lead to the ultimate goal of business growth. This proposal will research data and provide Turbomeca Canada with answers regarding the new possibilities in terms of microstructure, segregation phase and content developed during AM of IN738, an alloy considered unweldable. This knowledge is critical to determine if AM can open new manufacturing or repair routes for these high cost aerospace parts. The main objectives are to: (1) determine the window of solidification allowing for AM of IN738, (2) experimentally validate this processing window, including part characterisation and (3) translate this knowledge to simulate an actual IN 738 part re-built. Prof. Brochu's group has developed and validated new methodologies to perform AM of unweldable alloys and thus can provide an answer to successful AM of IN738, which closes this scientific bridge. This initiative is also supported by CRIAQ, to facilitate the establishment of this strategic aerospace-based AM research projects.