About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
Microstructural Control of a Multi-Phase PH Steel Printed with Laser Powder Bed Fusion. |
Author(s) |
Brandon N. Fields, Diran Apelian, Lorenzo Valdevit |
On-Site Speaker (Planned) |
Brandon N. Fields |
Abstract Scope |
The microstructure and properties have been observed to vary substantially in different locations of laser powder bed fusion parts. This variation is due to local changes in cooling rates and thermal gradient direction when varying the part geometry. Understanding and controlling this phenomenon is crucial towards optimizing the properties of a printed part. This microstructural control can be utilized when applied to a material which has differing phases with distinct advantageous properties (such as strong & brittle versus weak & ductile), that can be tuned locally to optimize the overall part. We demonstrate this understanding and control in a dual phase 17-4 precipitation hardened steel, quantify the differences in mechanical properties between the microstructures, and determine the ability and scale of microstructural control. Control of local and bulk properties by tuning the microstructure are observed. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Phase Transformations, Composites |