报告题目 (Title)：火箭发动机用增材制造耐热合金的研制（Development of heat-resistant alloy by additive manufacturing for rocket engine applications）
报告人 (Speaker)：Seungmun Jung研究员（韩国原子能研究院）
报告时间 (Time)：2024年12月6日(周五) 11:00
报告地点 (Place)：校本部复合材料研究中心一楼会议室A101
邀请人(Inviter)：毛小东 研究员
主办部门：理学院纳米中心
报告摘要：A staged-combustion cycle rocket engine, which redirects combustion gases from the preburner back into the main combustion chamber after driving the turbine, offers significantly higher thrust compared to traditional open-cycle engines. However, the preburner operates under high-temperature and high-pressure oxygen-rich environments, which can lead to metal ignition at temperatures below the material's melting point. Consequently, there is a critical need for materials that exhibit high-temperature strength and durability while demonstrating excellent ignition resistance in such extreme conditions. A staged-combustion cycle rocket engine, which redirects combustion gases from the preburner. Additive manufacturing (AM) technology, which builds components layer by layer, offers significant advantages in the production of aerospace launch vehicle parts. It allows for the fabrication of high aspect ratio components that are difficult to manufacture using conventional machining, minimizes material waste, and enables the one-step production of complex geometries. AM technology allows for the precise fabrication of intricate rocket engine components with high performance superalloy. It also facilitates rapid production and evaluation of developing alloys, reducing trial-and-error during manufacturing. Furthermore, process optimization enhances component reliability, directly improving rocket engine performance and reducing costs. This accelerates advancements in space exploration and commercial spaceflight. In this study aims to develop a superalloy optimized for additive manufacturing that prevents cracks or defects during the process, maintains high toughness, and ensures superior manufacturability for rocket engine applications.
