| Abstract Scope |
Laser additive manufacturing involves complex physical processes. The research paradigm of can be reshaped using advanced phenomenological models along with typical trial-and-error experimental explorations. In this talk, the complex AM processes will be examined on multiple scales including the 1D track, the 2D layer and the 3D full build considering the complex transport of energy, mass, and momentum. The generation of various build profiles and printing defects under diverse conditions will be explored via the spatiotemporal variations of the temperature fields, the liquid metal flow in the freeform molten pool, and the repetitive thermal cycles during the layerwise printing processes. Relevant correlations of process, structure, and properties, and the development of mechanistic models revealing critical features of various geometrical and metallurgical factors will be discussed as well. |