About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
A-16: Feasibility Study of Solidification Microstructure Control in Laser Powder Bed Fusion Based on Thermal Analysis and Microstructure Simulation |
Author(s) |
Masahiro Kusano, Makoto Watanabe |
On-Site Speaker (Planned) |
Masahiro Kusano |
Abstract Scope |
Because of the very fast cooling rate in a laser powder bed fusion (LPBF) process, the solidification microstructure is much finer than in conventional processes. Such microstructure determines the material properties of the fabricated parts. In this study, the effects of processing parameters, especially scanning strategy, on the solidification structure were investigated experimentally and numerically. By coupling thermal analysis and microstructure simulation by using finite element method and cellular automaton, it was demonstrated that the solidification microstructure can be controlled by changing the scanning pattern and hatching space. Such microstructures were confirmed by microscopic observations of nickel-based superalloy samples fabricated by LPBF. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Copper / Nickel / Cobalt, Solidification |