|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||A-33: Phase Field Modeling of Solidification Microstructure during Laser Sintering of Inconel 625
||Supriyo Ghosh, Jonathan E. Guyer
|On-Site Speaker (Planned)
Additive manufacturing via direct metal laser sintering (DMLS) is a relatively recent technology in which metallic parts are produced in a layer by layer fashion by melting (or sintering) and fusing the metallic powders. The evolution of microstructure in this process depends primarily on the melt-pool characteristics as well as the processing conditions. To study this, we use a phase field model for directional solidification of a dilute binary alloy approximating Inconel 625. The resulting morphologies vary from columnar to dendritic to equiaxed depending on temperature gradient and the laser scan speed. Moreover, events like solute trapping and spacing selection may reveal new insights in this rapid solidification regime. Finally, results are compared with existing findings.
||Planned: Supplemental Proceedings volume