|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Applications of Solidification Fundamentals
||Solidification Fundamentals in Metal Printing
||Tuhin Mukherjee, Tarasankar DebRoy
|On-Site Speaker (Planned)
The melting and solidification processes affect the grain structure, crystallographic texture, and the mechanical properties of the printed metallic parts. Modeling of heat transfer and fluid flow allows the understanding of the roles of the printing process and variables to calculate the temperature gradients, solidification growth rates, and the depth of penetration necessary to get the desired solidification structure. Since the undercooling, nuclei density, temperature gradient, and the solidification growth rate are alloy dependent, the roles of alloy composition on the printing of both single-crystalline and polycrystalline parts can be modeled. Models also evaluate the conditions of printing both single crystal and polycrystalline parts in nickel and titanium parts. Models also examine the roles of preheat temperature, heat input, and scanning pattern for both the repair of single crystal parts and for avoiding stray grains in directed energy deposition and powder bed fusion processes.
||Additive Manufacturing, Solidification, Modeling and Simulation