|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Powder and Ceramic Materials Science
||Numerical Characteristics of Plasma Arc Welding in SiC-ZrB2 Composite Ceramics
||Akash Meena, Jecee Jarman, Arezoo Emdadi, Jeremy Watts
|On-Site Speaker (Planned)
A 3D multi-physics plasma arc welding model is developed to study SiC-ZrB2 ceramic weld pool dynamics. This model includes transfer process of heat/mass, surface tension, Lorentz and Marangoni forces, and pressure and shear forces from the plasma. Level set method is applied to track the solid/liquid interfaces. The weldability of SiC-ZrB2 ceramic composites is related to SiC vol %; experimental results showed having more than 60 vol.% SiC in the composition would result in a poor welding due to SiC dissociation. In this study a thermodynamic-based parameter is utilized to incorporate dissociation of SiC. The numerical results are in good agreement with the experimental measurements for the weld pool geometry. In addition, a sensitivity analysis is performed on SiC-ZrB2 composites’ solid/liquid interface surface tension. This model will be utilized in understanding of the microstructural evolution through solidification of SiC-ZrB2 composite weld pool.
||Modeling and Simulation, Ceramics, Joining