|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Applications of Solidification Fundamentals
||Design of Microstructures for Laser Powder Bed Fusion: From Solidification to Grain Structure
||Pedro Rivera-Diaz-del-Castillo, Hossein Eskandari Sabzi
|On-Site Speaker (Planned)
A methodology linking the normalised enthalpy and melt pool geometry of 316L stainless steel, with the prevention of pore structures and cracks is presented. The model is further extended to account for strengthening as a result of the formation of dislocation cellular structures, Taylor hardening, the trade between dislocation multiplication and annihilation, as well as the development of compressive strains upon solidification. The sequential cycles of heating and cooling in the build are shown to control the occurrence of dynamic recrystallization and recovery as a means to control the microstructure. The methodology is presented as a general tool for microstructure design to maximise mechanical properties. The extension of the method to titanium and nickel alloys is discussed.
||Additive Manufacturing, Modeling and Simulation, Mechanical Properties