| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Ceramic-based Materials: Process Development, Materials, Process Optimization and Applications
|
| Presentation Title |
Interface Stability of Iron-Carbide Materials Fabricated via Laser-Direct Energy Deposition |
| Author(s) |
Som Dixit, Shunyu Liu, Fei Peng, Hai Xiao |
| On-Site Speaker (Planned) |
Som Dixit |
| Abstract Scope |
Ensuring the interface stability of metal-ceramic materials fabricated via laser-direct energy deposition (LDED) is vital in manufacturing dissimilar materials with desired properties and performance. This study prepared different powder mixtures of iron (Fe) with 10 vol.% carbides: silicon carbide (SiC), titanium carbide (TiC), zirconium carbide (ZC), and tungsten carbide (WC) and fabricated them with different energy densities. Scanning electron microscopy revealed the complete dissolution of SiC particles, resulting in the formation of pure C precipitates. For Fe-TiC/ZC/WC, unmelted carbide particles were retained even at the high energy density due to their thermodynamic stability with pure Fe and higher melting temperatures. The SEM-line scan was employed to observe composition gradients at the interfaces of Fe-carbide materials. Nano-indentation tests were conducted to characterize interfacial mechanical properties. |