|About this Abstract
||7th World Congress on Integrated Computational Materials Engineering (ICME 2023)
||A Computational Tool For Microstructure Development In Multicomponent Alloys During Additive Manufacturing
||Christopher Hareland, Gildas Guillemot , Charles-André Gandin, Peter W. Voorhees, Jin Zhang
|On-Site Speaker (Planned)
The properties of additively manufactured materials are intimately connected to the solidification process. The interfacial velocities found during additive manufacturing can lead to interfacial nonequilibrium at the moving solid-liquid interface. A thermodynamic description of moving non-equilibrium interfaces is developed that is applicable to concentrated multicomponent alloys. We find that solute drag affects both the velocity of the interface and distribution coefficients for the compositions of the two phases at the interface. This theory has been integrated with a description of dendritic growth in multicomponent alloys that incorporates CALPHAD descriptions of the Gibbs free energies and diffusion matrices with off-diagonal diffusion coefficients. This computational tool yields morphology diagrams for the solidification morphologies of complex multicomponent alloys of industrial importance during additive manufacturing. Examples of such diagrams for alloys of commercial importance, such as stainless steel 316L, will be given.