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Meeting MS&T23: Materials Science & Technology
Symposium Additive Manufacturing: Equipment, Instrumentation and In-Situ Process Monitoring
Presentation Title Real Time Observations of In-Situ Alloying Molybdenum and Ti-6Al-4V in Laser Directed Energy Deposition Additive Manufacturing
Author(s) Marwan Haddad, Aslan Bafahm Alamdari, Kristina May, Hui Wang, Benjamin Gould, Sarah Wolff
On-Site Speaker (Planned) Marwan Haddad
Abstract Scope 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.


An Efficiency Study of Multi-Mode Laser Profiles
Customized Glove Box for In Situ Monitoring of Laser Directed Energy Deposition
Exploring a Supervisory Control System Using ROS2 and IoT Sensors
Fill Impact Welding: Additive Manufacturing through Ballistic Impact of Metallic Sheets
Implementing Statistical Process Control in Laser Powder Bed Fusion Metal Additive Manufacturing
In-situ Pyrometric Sensing for Real-time AM Process Monitoring and Control
Investigating the Effect of Part Geometry on Microstructure for Laser Powder Bed Fusion of Bismuth Telluride using In-Situ Process Monitoring
Melt Pool Scale Process Monitoring for Laser Hot Wire Additive Directed Energy Deposition
Quantification of Build Interruptions through In-Process Monitoring and Mechanical Test
Real Time Observations of In-Situ Alloying Molybdenum and Ti-6Al-4V in Laser Directed Energy Deposition Additive Manufacturing
Reinforcement Learning for In-situ Melt Pool Control during Laser Powder Bed Fusion
Robust Detection of L-PBF Process Anomalies Using High-speed On-axis Melt Pool Pyrometry
Two-color Melt Pool Thermal Imaging on Powder-blown Laser-DED to Advance Understanding of Melt Pool Thermal-fluid Physics

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