Development of Additive Manufacturing Superalloys with high ?' volume fraction

开发高合金增材制造高温合金

• 批准号: RGPIN-2019-04073
• 负责人: Martin, Etienne
• 金额: $ 2.4万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=760432
• 关键词: Development; Additive; Manufacturing; Superalloys; volume

Summary The proposed research addresses the critical need to develop optimum high ?' superalloys amenable for Additive Manufacturing (AM). Ni-based superalloys are known to have a complex chemistry, with over a dozen alloying elements in most alloys, enabling them to achieve outstanding high-temperature mechanical performance as well as oxidation resistance when processed using conventional routes (e.g., casting and forging). Nonetheless, this complex chemistry results in the formation of various phases that could affect their processability using AM, resulting in cracking and severe distortion in parts such as compressor veins and air foils, which are critical in the aero, energy, and defense sectors. To address this need, the proposed program of Discovery research will: 1.Understand the mechanisms associated with cracking during SEBM processing. Focusing on SEBM processing conditions for high ?' superalloys and identifying "crack-safe" processing window. 2.Understand the mechanisms associated with cracking during SEBM post-processing. Focus will be on heat treatments following SEBM processing. These heat-treatments are required for high ?' Superalloys to fully benefit their ?' precipitation structure on mechanical properties. 3.Characterize and model cracking due to ductility dip in AM superalloys microstructures. Focus will be on rapidly cooled microstructures resulting from SEBM processing. This objective will initiate the long term objective to simulate cracking during SEBM. This research program proposes a combination of experiments, analytical theory, and computer simulations to explore the processing-structure-property relationships of AM superalloys. Advanced characterization techniques, mechanical testing, and advanced modeling approaches will be used to improve our understanding and accelerate the development of next generation of Superalloys suitable for AM. These the research will accelerate the development of future aircraft and gas turbine engines, more specifically the fabrication of complex geometry parts, enhancing the competitiveness of the Canadian aero, energy, and defence sectors. Four graduate students will be trained in state-of-the-art experimental and analytical techniques in the AM field. Their recruitment within Canadian industry and academe will further enhance Canada's future competitiveness.

总结拟议的研究解决了迫切需要开发最佳的高？可用于增材制造（AM）的高温合金。已知Ni基超合金具有复杂的化学性质，在大多数合金中具有十几种合金元素，使得它们能够在使用常规途径（例如，铸造和锻造）。尽管如此，这种复杂的化学反应导致形成各种相，这些相可能会影响AM的加工性能，导致压缩机静脉和机翼等部件的开裂和严重变形，这些部件在航空，能源和国防部门至关重要。为了满足这一需求，Discovery研究计划将：1.了解SEBM加工过程中与开裂相关的机制。专注于SEBM加工条件的高？高温合金和识别“裂纹安全”处理窗口。2.了解SEBM后处理过程中与开裂相关的机制。重点将放在SEBM加工后的热处理上。这些热处理要求高？超合金，充分发挥其优势？析出组织对力学性能的影响。3.表征和模拟由于AM高温合金显微组织中的延展性下降而导致的裂纹。重点将放在SEBM加工产生的快速冷却微观结构上。该目标将启动SEBM期间模拟开裂的长期目标。本研究计划结合实验、分析理论和计算机模拟来探索AM高温合金的工艺-结构-性能关系。先进的表征技术，机械测试和先进的建模方法将用于提高我们的理解和加速下一代适用于AM的高温合金的开发。 这些研究将加速未来飞机和燃气涡轮机发动机的发展，更具体地说，是复杂几何零件的制造，提高加拿大航空、能源和国防部门的竞争力。四名研究生将接受AM领域最先进的实验和分析技术的培训。他们在加拿大工业界和企业界的招聘将进一步提高加拿大未来的竞争力。