|About this Abstract
||MS&T23: Materials Science & Technology
||Additive Manufacturing: Equipment, Instrumentation and In-Situ Process Monitoring
||Real Time Observations of In-Situ Alloying Molybdenum and Ti-6Al-4V in Laser Directed Energy Deposition Additive Manufacturing
||Marwan Haddad, Aslan Bafahm Alamdari, Kristina May, Hui Wang, Benjamin Gould, Sarah Wolff
|On-Site Speaker (Planned)
Additive manufacturing of multi refractory materials has a wide range of benefits, including high-throughput printing for materials discovery of lightweight, refractory high entropy alloys; metal matrix composites, and functionally grading of materials. Direct observation of the interaction of multiple elements during the Laser directed energy deposition (L-DED) additive manufacturing process is made with high-speed synchrotron X-ray imaging with frame rates of up to 30,000 fps and high-speed thermal images at 10,000 fps. This talk will discuss the in-situ alloying of Molybdenum into Titanium alloy during the L-DED process, including how the velocity and impact angle of the powder particles, the surface tensions and surface temperatures of the melt pool, the melt pool flow behavior and oxidation rate led to different rates of melting and alloying. These insights can provide understanding and strategies for optimal printing of multi-materials, especially those with varying thermal and reactive properties.